How many fish in a 36 gallon aquarium

Hexagonal fish tanks typically come in four standard sizes with the 65 gallon tank being the largest. The smallest tank measures at 14 inches in length, 12 inches in width, and 18 inches in height. The next size up is 18 inches in length, 16 inches in width, and 20 inches in height. The second largest tank measures 23 inches in length, 20 ...

This somehow conjured up emotions from decades ago when I had several marine aquariums with my father. It was our hobby together--great memories of feeding soft coral, eels and lion fish! I've been using the 10g tank to teach my 3 yr old daughter about fish and fish keeping. This past weekend we purchased a 36 gallon bow front aquarium that I ...If you are wondering "how many angelfish in a 65-gallon tank?", the answer is no more than 3. Each Angelfish requires a minimum of 20 gallons of tank space. Angelfish can get quite large, and therefore, each one does require a good deal of space to be happy and healthy.Swordtail fish are popular freshwater aquarium fish known for their unique tail fin shape and vibrant colors. They thrive in well-maintained aquariums with a temperature range of 65-82°F (18-28°C) and a pH between 7.0 and 8.3. ... How many Swordtail Fish in a 20-gallon tank? ... August 10, 2019 at 8:36 am We have 7 to say tetra , 2 small ...The Bluefin Notho, also known as the Rachovi Killifish, is a great fish that's easy to add to almost any aquarium setup. They're laidback and add a nice touch of color to your tank. They're a slightly large fish but are plenty small enough for a 55-gallon tank. 6. Boesemani Rainbow.One of the most common but hardest questions we get is "How many fish can you put in a 30-gallon aquarium? What about a 20-gallon tank? 55 gallons?". As you may guess, there is an infinite number of possible fish combinations for each tank size that we could recommend. To simplify things, read this article that discusses the three factors ...Sep 1, 2022 · In total a 50 gallon aquarium can hold up to 25 small fish or between 2-5 medium sized fish. With a 100 gallon tank you can start keeping fish that grow beyond 10 inches in size. Oscars, Bala Sharks, Bichirs, and Discus are all good options. In total 100 gallons can hold between 18 and 40 fish. Which Size Aquarium Should You Get?

5. Zebra Danios. The low-maintenance zebra danios can happily thrive in a three-gallon fish tank at roughly one and a half inches long. Not only does it get along well with other types of fish, but it's simply beautiful. As its name suggests, its dark blue and white stripes appear similar to a zebra's stripes. 6.Some Exceptions. While there are some keepers out there who say you can keep as many as 10 cichlids in a 36 gallon tank, there are some caveats to their care. First, the cichlids won't get any larger than 3 inches, even at maturity. And second, there is a super powerful filter while performing faithful water changes.Black Devil Snails (Faunus ater) 2 to 3 inches. Mystery Snails (Pomacea bridgesii) 2.5 to 3 inches. Rabbit Snails (Tylomelania sp.) 3 to 5 inches. Apple Snails (Ampullariidae) 5 inches. If you’re using the inch-per-gallon method, this will help determine how many snails go into a tank according to their species.Another coldwater fish is the Platinum Blue Medaka Ricefish. These fish are incredibly tiny, and adults will only grow to be about 1.5 inches in length. Native to Japan, hobbyists can keep up to 18 of them in a 30-gallon tank, but they have a relatively short life span, only averaging about 2 years in captivity.20-Gallon Tank. A 20-gallon fish tank should be large enough for two clownfish. The basic rule is that one clownfish is going to need 10 gallons of space. So, if you have two clownfish, then a 20-gallon aquarium would be large enough to support them.

How Many Fish In A 36 Gallon Tank? (Easy & Clear Answer) Now that we know how much water each goldfish needs, we can figure out how many can be kept in a …InvestorPlace - Stock Market News, Stock Advice & Trading Tips Safe & Green (NASDAQ:SGBX) stock is heading higher on Thursday followi... InvestorPlace - Stock Market N...How many fish to put in a 100 liter aquarium: Small fish: 100 (literage) / 1.5 (liters/cm for small fish) = 66 cm in total for small fish. So you can have, for example, 22 3 cm fish in that aquarium. Medium fish: 100 (literage) / 2 (liters/cm for medium fish) = 50 cm in total for medium fish.The one-inch-per-gallon rule is an easy way to calculate how many fish you can stock in your aquarium. It considers the size of the aquarium and recommends one inch of adult fish for every gallon of water. Therefore, if you are wondering how many fish you can have in a ten-gallon tank, this rule tells us you can stock ten fish that grow to an ...

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1. Guppies. Guppy. Guppies are enlisted at the top of the list among the 5 best fish for an 8-gallon tank. Originally these fish species are found in the Northeast South American region. Usually found in shallow waters like lakes and ponds. At this time, about 300 different species are discovered.How many fish can be in a 2 gallon tank? You can have up to 2 fish in a two gallon fish tank. If you only have a 2 gallon tank, we recommend small fish such as guppies, minnows, tetra fish, and small goldfish. If your fish are not longer than an inch, you can fit 3 fish in a 2 gallon tank.You can follow the suggested guideline of 1 -1.75 pounds of rock per gallon of water but this method is not 100 percent full proof. The density of your rock will change this distribution. For instance, a 30-gallon tank might require 17- 30 pounds of live rock per gallon. If you don't think you want or even need that much live rock, you can ...How Size Affects Aquarium Weight. A 180-gallon fish tank weighs over 1 ton. By. Shirlie Sharpe. ... 65-gallon: 36" x 18" x 24" 126 lbs. 772 lbs. 75 gallon: 48" x 18" x 21" 140 lbs. 850 lbs. 90-gallon: ... A 50-gallon fish tank will have the same weight measurements whether it is rectangular, hexagonal, or cylindrical in shape. ...If you experience fish phobia you may avoid aquariums or fish markets. But strategies are available to help you cope. If you experience fish phobia, you may avoid aquariums or fish...Tokyo's enchanting fish art exhibition uses over 5,000 goldfish. One of Tokyo’s most popular summer attractions features LED light displays, impressive glass sculptures, an immersi...

A simple way to do that is to employ a clean-up crew in your tank. A clean-up crew consists of snails, crabs, shrimps, and starfish in your saltwater aquarium that perform the following tasks: · Clean-up detritus (non-living organic matter) · Sift through your sand. · Keeps algae under control on a day-to-day basis.Following the “1 inch of fish per gallon of water” rule of thumb, you can put three 1-inch fish in a 3-gallon tank. You can also keep invertebrate tank mates with one 2-inch fish, like a betta. You can unknowingly overstock a 3-gallon tank even if you bring home just one pet fish. As juveniles, many large-bodied fish species can easily fit ...Dimensions: The dimensions of the tank will vary depending on the brand and model, but most 125 gallon tanks are approximately 48″ x 18″ x 24″. The stands for these tanks are typically about 24″x18″x30″. Weight: The weight of the empty tank and stand can range from 150-200 pounds.1 day ago · How many fish to put in a 36 liter aquarium: Small fish: 36 (literage) / 1.5 (liters/cm for small fish) = 24 cm in total for small fish. So you can have, for example, 8 3 cm fish in that aquarium. In such a small aquarium, we can only have small fish. How many fish to put in a 40 liter aquarium: Small fish: 40 (literage) / 1.5 (liters/cm for ... JBJ Black 25 Gallon Rimless Flat Panel Aquarium Kit. (1) $615.74 was $619.99. JBJ Nano Rimless 20G AIO Aquarium. (0) $179.99 was $239.99. 20 to 39 Gallon Long Aquariums. Midsize aquariums are a great choice for new pet parents or anyone with limited space or budget. A 20 gallon long aquarium is roomy enough to accommodate several fish ...Simply insert the details about your fish tank shape and dimensions, together with information about the fish species you plan on keeping, and the calculator will tell you how many fish you can fit in your aquarium.30″ x 15″ x 21″: 36 gallons. 36″ x 15″ x 20″: 46 gallons. 48″ x 18″ x 22″: 72 gallons. 48″ x 18″ x 29″: 90 gallons. Remember that it is essential to note the weight of your fish, substrate, plants, and decorations before final setup to cross-reference it with how much your tank stand can actually hold. If you don't ...15. Pygmy Sunfish. The Pygmy Sunfish ( Elassoma evergladei) is an extravagant-looking fish that thrives in a 5-gallon tank. In fact, you can even put a group of these fish in one tank. These small fish prefer heavily planted aquariums as the plants provide lots of hiding spots which helps to reduce stress.So, a 30-gallon tank could hold up to six at a time. 7. Cherry Barbs. Cherry barbs are very small fish that can grow up to 2 inches in length, although they often top out at as small as 1.5 inches in length. Therefore, you should provide each cherry barb with at least 2 gallons of tank space.

How high you fill the water and what you place in the tank will decrease the amount of water volume to a more realistic lower quantity. For example, a small 2.5 Gallon tank 12 x 6 x 8 holds 2.5 Gallons when completely full to the top. But allowing for the water to be lower than the very top rim, some plants and decorations in the tank the actual real

The Bluefin Notho, also known as the Rachovi Killifish, is a great fish that's easy to add to almost any aquarium setup. They're laidback and add a nice touch of color to your tank. They're a slightly large fish but are plenty small enough for a 55-gallon tank. 6. Boesemani Rainbow.Surface area of a fish tank = length x width. To calculate how many fish you can have using this method is: 1 inch of adult fish for every 12 square inches of water surface area. For wide bodied fish, it is 1 inch of adult fish for every 20 square inches. The greater the surface area of your tank, the more fish you should be able to have.One of the most common but hardest questions we get is "How many fish can you put in a 40-gallon aquarium? What about a 20-gallon tank? 55 gallons?". As you may guess, there is an infinite number of possible fish combinations for each tank size that we could recommend. To simplify things, read this article that discusses the three factors ...The average price for a gallon of diesel gas jumped by 51 cents reaching $5.13 from $4.61 within just a week, according to AAA. The average price for a gallon of diesel gas jumped ...Surface area of a fish tank = length x width. To calculate how many fish you can have using this method is: 1 inch of adult fish for every 12 square inches of water surface area. For wide bodied fish, it is 1 inch of adult fish for every 20 square inches. The greater the surface area of your tank, the more fish you should be able to have.Aquarium Shape; 50 Gallon: 36.375 x 18.375 x 19: Standard Rectangular: 55 Gallon: 48.25 x 12.75 x 21: Standard Rectangular: 60 Gallon: 48.375 x 12.875 x 23.875: Standard Rectangular: ... Fish aquarium dimension in feet 9*6*2(L*W*H) in ceiling how much water in use & How many fish stay there &Which types of fish pls halp for cafe. Momchil.After researching 10 glass 20-gallon aquarium kits and ... so you should be careful not to overstock the tank with too many fish ... which features 66 white LEDs (6,500 K) and 36 blue LEDs (445 nm

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Recommended Number of Fish per Gallon. As a general rule of thumb, you should aim for no more than one inch of fish per gallon of water. This means that in a 10-gallon tank, you can keep around ten 1-inch fish. However, it’s important to keep in mind that some fish species grow larger or are more active than others, so you’ll need to adjust ...How thick is a 10 gallon aquarium glass? 0.21 in. To calculate the glass thickness you need to know the measurements of your aquarium. If you consider a length of 20 in and a width of 10 in, you will have a 0.21 in bottom thickness and 0.15 in front/side thickness for a 10 US gallon. You can check these values on our calculator!May 13, 2023 · In a general estimate, in a regular fish for 5 gallon tank of water, you can easily support 3-5 fishes if no one is fighters. The 10 gallon fish tank doubles it. Try to fill up your tank with low and high swimmers, and your fishery will look richer. You are keeping too many fish, and they have not equal space around the reef tank will cause a ... Standard Size: 72″ x 18″ x 21″. A average 125-gallon aquarium has a capacity of 568.261 Liter a 125-gallon fish tank is around 8 feet in length and 2 feet in breadth. This tank can accommodate adult-sized aquariums since it has a volume of 23 cubic meters for adult-sized balloons. As an example, a typical goldfish bowl has a …One of the most common but hardest questions we get is "How many fish can you put in a 55-gallon aquarium? What about a 20-gallon tank? 10 gallons?". As you may guess, there is an infinite number of possible fish combinations for each tank size that we could recommend. To simplify things, read this article that discusses the three factors ...Most 125 gallon aquariums’ dimensions are 72W″ x 18D″ x 22H″, however the exact dimensions can differ slightly depending on the shape or brand of the tank. When empty the tank will weigh around 206 pounds, but once full it can weigh anywhere up to 1200 pounds depending on your setup.Jun 28, 2022. #2. Qelcome to the hobby and the forum. First thing to do is cycle it, that process can take from a couple of weeks to a month depending on how you set up your tank and the steps you follow. More info can be found in the "cycle your tank" section of the forums, and if you have questions that's what we're here for.Unfortunately, your 36 gallon is fully stocked with just two adult goldies. Unless you are planning on upgrading to 50 gallons or more in the future, I wouldn't add any more fish. The reason for this, is because of the immense waste production of goldfish, and the size they can reach. Goldfish produce a TON of ammonia, and they need to be in a ... ….

The stand for a 40 gallon fish tank has to be completely level and able to support ~400 pounds of weight. The top of the stand must be wide enough to sit directly under the exact dimensions of the 40 gallon tank, which means a footprint of at least 36.25 inches x 18.25 inches for an Aqueon tank, or 36.5 inches x 15.5 inches for a Top Fin.The size of a standard rectangular 40 gallon aquarium is usually 36″ x 13″ x 20″, but if a longer tank is preferred, the measurements are 48″ x 12″ x 16″. On the other hand, if you opt for a breeder tank, it usually has dimensions 36″ x18″ x16″. ... Determining how many fish can fit in a 40-gallon tank is not just about the ...This is a logical fallacy that many people fall into when figuring how much a floor can hold. The idea that if a floor can hold 7 grown men, each weighing 200 lbs, if can hold a 1400 lb fish tank. Many floors can hold a weight well above their max rated capacity momentarily, or even for a few hours, especially while it is moving around.The number of fish you can keep in a 36-gallon tank depends on the size and species of the fish. As a general rule of thumb, you can have 1 inch of fish per gallon of water. So if you have small fish that only grow to 2 inches in size, you can have around 18 fish in a 36-gallon tank. However, if you have larger fish that grow to 6 inches in ...As a very broad general rule, a 20-gallon tank can probably support up to 20 fish, with up to 10 other species such as invertebrates, snails, and other bottom-feeders. ©Sandra Burm/Shutterstock.com. Basically, some species are just too large to thrive in a 20-gallon tank.A standard rectangular 40 gallon fish tank is likely to measure around 36 x 17 x 17 inches. If you choose a glass tank, it’s likely to weigh somewhere between 55 to 85 lbs . And that’s before adding the water or equipment. ... a 40 gallon aquarium gives much more choice in the range of fish you can keep. Cons.Jul 17, 2021 · Here, let me give you an example: 1 small clownfish - 2-3 inches. 1 Banggai cardinalfish - 2-3 inches. 1 firefish - 2-3 inches. 1 blue mandarin dragonet - 2-3 inches. 1 tailspot blenny - 1-2 inches. 1 Nassarius snail - 1 inch. 1 turbo snail - 1 inch. 7-9 dwarf hermit crabs of varying species 7-9 inches. Ideal for danio and tetra glofish. 20-gallon tank. 5-6. 30-gallon tank. Approximately 9. 50-gallon tank. More than 10. Glofish are schooling fish, therefore keeping them in a 5- or 10-gallon tank will lead to overcrowding and ultimately will result in poor health. Also, they can grow up to a maximum length of 2.5".Dec 28, 2013. #6. The recommended formula is 5 watts per gallon of water. What temperature are you trying to maintain, I'd run for higher temps, above 80F id recommend (2) 150W heaters. For temp's below, id run (2) 100W heaters that way you have a back up in case one goes out.High-Quality Construction: The SeaClear 36 Gallon Bowfront Aquarium is made from acrylic, a durable and lightweight material that is more impact-resistant than glass. It is also less prone to scratches, providing a clear view of the underwater environment. 3. Spacious Capacity: With a capacity of 36 gallons, this aquarium offers ample space to ... How many fish in a 36 gallon aquarium, A 29 gallon aquarium is a great size for many different types of fish. It is also a popular size for beginner aquarium enthusiasts. The dimensions of a 29 gallon aquarium are 48 inches long, 12 inches wide, and 20 inches tall. This size tank is perfect for housing small to medium sized fish such as goldfish, bettas, and guppies., 55 lbs. 455 lbs. 40 gallon Breeder. 36″ x 18″ x 16″. 58 lbs. 458 lbs. A standard 40-gallon breeder tank measures 36-3/16″ x 18-1/4″ x 16-15/16″. It is also worth noting that an average tank of this size weighs 58 lbs. when empty, so it will weigh about 458 lbs. when full. However, the weight also depends on the material of the tank., Fish stock calculator using surface area, instead of fish per gallon, to estimate how many fish to stock in freshwater tropical, cold, or marine aquariums, So, in reality, your 40-gallon tank will have between 34 and 36 gallons of water in it. This will lower the number of fish that are safe to have. ... How Many Fish In 40-Gallon Aquarium. Depending on the fish size, when they are adults, you can keep a good number of fish in the 40-gallon aquarium. They need to have enough room to swim around ..., Most 125 gallon aquariums’ dimensions are 72W″ x 18D″ x 22H″, however the exact dimensions can differ slightly depending on the shape or brand of the tank. When empty the tank will weigh around 206 pounds, but once full it can weigh anywhere up to 1200 pounds depending on your setup., Best Aquarium Size For Oscar Fish. For optimal comfort, health, and activity, an Oscar fish thrives best in a 75-gallon tank. This size not only meets their basic needs but also ensures a premium environment for the Oscar fish. Here is what you should know: Optimal Growth: As mentioned, Oscar fish can reach 12-14 inches in length. A 75 …, This is a logical fallacy that many people fall into when figuring how much a floor can hold. The idea that if a floor can hold 7 grown men, each weighing 200 lbs, if can hold a 1400 lb fish tank. Many floors can hold a weight well above their max rated capacity momentarily, or even for a few hours, especially while it is moving around., Ok then 😊 I would go with 3-4 Fancy Guppies, 3-4 Platy, and 3-4 Albino Cory Catfish. Guppies, Platys, are livebearer's so they give live birth. So they are always pregnant so expect to see fry. the rule is (1:3) 1 male to every 3 rule correct me if Im wrong. 😊, In a general estimate, in a regular fish for 5 gallon tank of water, you can easily support 3-5 fishes if no one is fighters. The 10 gallon fish tank doubles it. Try to fill up your tank with low and high swimmers, and your fishery will look richer. You are keeping too many fish, and they have not equal space around the reef tank will cause a ..., Three 1-inch fish are ideal for a 3-gallon tank. Due to its small size, a 3-gallon tank is not ideal for keeping many fish. Additionally, adding extra aquarium equipment, substrate, and live plants will reduce the swimming space available for your fish. You might need to keep one medium-sized fish or a few small fish., 1. How many fish you want to put into the tank; 2. The size of the tank, or how much water it can hold; 3. The shape of the tank, rectangle, round, etc.; and. 4. How many decorations you want to put in the tank. When talking about the size of the fish tank for your Angelfish, you need to consider more than the amount of water the tank can hold., Finish your room with other items from Flipper (sold separately) The Aquarium Stand ships flat to your door and 2 adults are recommended to assemble. The Stand is built to hold up to 37 gallon aquariums or up to 450 lbs. Each shelf holds 25 lbs. Assembled dimensions: 30.333”H x 33.0625”W x 14.6875”D. $107.12., But if you have plants, you want to use 1 to 1.5 pounds of gravel per gallon. So, 60-70 pounds of gravel is what you would need for a 55-gallon tank. Gravel is going to help your fish by maintaining water quality. There are a wide variety of types/styles of the grave for your aquarium., Truthfully, there is no perfect way to calculate the actual quantity of fish to stock in your aquarium. But, there is a general rule to stocking fish, and that is “ 1 inch of fish for each 1 gallon of aquarium …, This somehow conjured up emotions from decades ago when I had several marine aquariums with my father. It was our hobby together--great memories of feeding soft coral, eels and lion fish! I've been using the 10g tank to teach my 3 yr old daughter about fish and fish keeping. This past weekend we purchased a 36 gallon bow front aquarium that I ..., May 13, 2023 · In a general estimate, in a regular fish for 5 gallon tank of water, you can easily support 3-5 fishes if no one is fighters. The 10 gallon fish tank doubles it. Try to fill up your tank with low and high swimmers, and your fishery will look richer. You are keeping too many fish, and they have not equal space around the reef tank will cause a ... , Fish Tank Calculator. You can use this useful fish tank calculator to determine key aspects of a fish tank; for example, the water surface area, the capacity, and the glass surface area. Simply choose the unit of measurement, input details of the base shape of the tank from the drop-down menu, input the dimensions identified a, b, c, input the ..., You can't wait to go to your local fish store and buy 100 fish for your 10 gallon fish tank. But wait, maybe you should rethink that plan. Not all fish can be kept together and there is a limit as to how many you can keep in your tank, no matter how big it might be. Here's how to figure out how many fish per gallon your freshwater or ..., Provided that your 30-gallon fish tank is 80 cm in length, 40 cm in width, and 35 cm in height. The weight of water capacity should be (80*40*30)/1000=96L, which is about 25 gallons. The weight of water is about 212lb. If it is a glass tank, an empty 30-gallon glass tank generally weighs about 45lb, therefore, the weight with water should be ..., In a 20-gallon aquarium, 20/3= 6.67. We can see that up to 6 Mollies of 3 inches can be added. If the molly fish is 4 inches, you can add 20/4= 5 Mollies in a 20-Gallon tank. But to add five fish would be compact, so reducing the number to 4 Mollies is advised. If your Mollies are 2 inches, you can add 9 Mollies., 320 Watts. A 40 gallon fish tank will need at least a 120-watt heater if the room it is kept in is 5 degrees cooler than your aquarium. If the room is 10 degrees cooler then a 40 gallon tank will need a 200-watt heater. If the room is more than 15 degrees cooler than the temperature of your aquarium then a 320-watt heater will be in order., Sep 1, 2022 · In total a 50 gallon aquarium can hold up to 25 small fish or between 2-5 medium sized fish. With a 100 gallon tank you can start keeping fish that grow beyond 10 inches in size. Oscars, Bala Sharks, Bichirs, and Discus are all good options. In total 100 gallons can hold between 18 and 40 fish. Which Size Aquarium Should You Get? , Jun 28, 2022. #2. Qelcome to the hobby and the forum. First thing to do is cycle it, that process can take from a couple of weeks to a month depending on how you set up your tank and the steps you follow. More info can be found in the "cycle your tank" section of the forums, and if you have questions that's what we're here for., 150 gallon. 72″ x 18″ x 28″. 1800 lbs. 180 Gallon. 72″ x 24″ x 25″. 2100 lbs. The above information is for most standard glass aquarium sizes and weights. If you are considering an acrylic tank, they are available in many of the same sizes, they will just weigh a little less. One thing to keep in mind is that as glass aquariums get ..., 25 Oct 2020 ... After months of prep, the 36 gallon aquarium is fully setup and ready to be seen! I hope you guys enjoyed the setup of this tank, ..., More standard units of bow front aquarium are available in 16, 26,36,46,54 and 72 gallon sizes. However, you can also probably order bow front aquarium of any size, if you need a custom aquarium. There is surely going to be a perfect size available for you from 6-200 plus gallon aquariums., Glofish Pristella Tetras need at least 1.7 gallons per individual. Glofish Betta fish need 5 gallons per individual. Keep in mind that if you put 2 male Bettas in a 10-gallon tank it will likely end in disaster. However, putting 2 males in a 20-gallon tank has a decent chance of working if the tank is decently planted., May 13, 2023 · In a general estimate, in a regular fish for 5 gallon tank of water, you can easily support 3-5 fishes if no one is fighters. The 10 gallon fish tank doubles it. Try to fill up your tank with low and high swimmers, and your fishery will look richer. You are keeping too many fish, and they have not equal space around the reef tank will cause a ... , In a 15-gallon tank try; 2-3 x Java Fern. 6 x Anubias. 2-3 x Java Moss Ball. Overall a fifteen-gallon tank is a great size for a beginner to start a small community tank! And always remember It's important to understand the nitrogen cycle and how to maintain healthy water conditions for your fish. Question #5., Jun 28, 2022. #2. Qelcome to the hobby and the forum. First thing to do is cycle it, that process can take from a couple of weeks to a month depending on how you set up your tank and the steps you follow. More info can be found in the "cycle your tank" section of the forums, and if you have questions that's what we're here for., SeaClear 10-100-15461/63 In-Stock Now. Buy Your SeaClear System II 46-Gallon 36"Lx16.25"Wx20"H Bow Front Acrylic Aquarium Direct and Save. Free Shipping on Orders Over $75. Tax-Free., Generally, the rule of thumb most hobbyists are familiar with is for every 1 inch of fish per gallon of water. For example, that means is if you have 2 inches of fish you need 2 gallons of water. However, this is just a guideline as there can be exceptions to this rule, so it is important to understand what can influence these exceptions., Feb 20, 2024 · Glofish Pristella Tetras need at least 1.7 gallons per individual. Glofish Betta fish need 5 gallons per individual. Keep in mind that if you put 2 male Bettas in a 10-gallon tank it will likely end in disaster. However, putting 2 males in a 20-gallon tank has a decent chance of working if the tank is decently planted.