40 gallon Long, 48" x 12" x 16", 55 lbs, 455 lbs.

Jul 4, 2016 - The size of a 55 gallon fish tank depends again on the style of tank you select
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Saltwater aquariums are a beautiful addition to any home; marine fish often have a beauty that freshwater fish often cannot replicate. Setting up a saltwater aquarium can be a difficult task that requires very careful preparation. A 55-gallon tank is one of the more popular sizes when it comes to aquariums, as it allows for a lot of swimming space and serves as an excellent display tank, and is readily available at most pet shops. Setting up a 55-gallon saltwater fish tank requires several materials and many steps, not to mention a lot of patience, so proceed knowing that it won't be easy, but the experience can be very rewarding.
Includes: Aquarium Used For: Freshwater Fish & Saltwater Fish Tank Size: 55 gallon
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A 55-gallon tank is the minimum size you should consider if you intend to keep African Cichlids. Bigger is even better! These are beautiful but highly aggressive fish that will stake out territory in your tank. Really, the footprint of the tank matters more than the height, as more ground space means more territory. Hello! Arowana's are HUGE fish, I'm sure you've researched them. If you get them a small tank, (a 55 Gal might seem big to you, but to a fish of that size, it's tiny!)
Photo provided by FlickrFeb 16, 2016 - A 55 gallon (208.2 L) tank is a standard size that will allow you to have a variety of fish
Photo provided by FlickrAnyway, I was looking at making a sump out of a fish tank but I wasn't sure what sized tank I should use for a 55 gallon main tank
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Anyway, I was looking at making a sump out of a fish tank but I wasn't sure what sized tank I should use for a 55 gallon main tank? What size should I use? I was going to have a protein skimmer and refugium in it.If you already have a 55 gal tank, then fine, it will probably work for your oscar by himself. However, if you are buying a tank from scratch, I strongly recommend that you get a 75 gallon (286 liter, 4 feet by 18 inches, by 20 inches) or larger tank. This is for two reasons. First of all, a tank with a single fish in it is somewhat boring to most people. At some point, you will probably be tempted to get more fish. With a 75 gal (or larger) tank, this is a possibility. The second reason is because it is quite possible that you will end up with a larger than average oscar. Oscars can and do grow up to about 18 inches (45 cm). A 55 gallon tank is simply not big enough to house a fish of this size. If you have a 55 gal, and you end up with a monster like this, you will end up needing to buy another larger tank. It is cheaper and more eficient to just buy the bigger tank in advance. When you consider the total cost of a complete set-up, the increase in price of a 75 gal over a 55 gal is not that big of a deal.The size of a 55 gallon fish tank depends again on the style of tank you select. The measurements of a rectangular tank will be much different from a tall, long or hexagon fish tank.You should consider the cost of keeping a large aquarium running 24/7. You will need a heater and a filter running every single day of the year. Because Oscars are tropical fish the aquarium water must be kept warm at all times. A 55-gallon aquarium is going to require a minimum of 200 W of heating that must be switched on all the time (imagine leaving the house lights on 24/7 in two or three rooms of your house). Filters won't use as much power, but they will still need to be kept running at all times. Many of us have water meters and therefore pay for what you use. The bigger the tank, the bigger the water change each week. Then you've got your food on top of all this, plus any medication that may be needed. The biggest mistake you can make is thinking that an aquarium doesn't cost anything to run. Big aquariums can not only increase your electric bill each year but also the water bill at the same time.Having the correct size aquarium for an Oscar is absolutely paramount. You wouldn't buy a Saint Bernard dog if you lived in a tiny one-room flat, would you? So why people think they can house a large Oscar in a 25-gallon tank is anyone's guess. Remember that Oscar fish can reach 12 inches + as adults. That's a large fish that needs a fairly big aquarium. One adult Oscar must have at least 55 gallons of water to itself. If you are able to get a larger aquarium then we would always advise you to do this. Keeping tropical fish is highly addictive and once you've got one fish, you normally want more. So what if you want two Oscars or several tankmates? Start thinking about an aquarium in excess of 100 gallons. I can absolutely promise you that trying to keep two Oscars in anything less than 100 gallons will result in extra tank maintenance. You'll find yourself having to change the water more than once a week and carry out filter cleaning more often. The worst thing you can do is give yourself too much work to the because after a while you will get bored with it and the chances are the fish will then start getting neglected.