fish tanks come in many shapes. knowing the length of the tank alone is not enough to answer the question. if you multiply length of the tank by width of the tank by height of the tank and get the total cubic inches of the tank, this number can then be converted to gallons via and online converter/calculator
A 60x20x20-inch fish tank holds 104 gallons.
You need about one gallon for every inch of fish you have
Volume of the pipe = 4.896 gallons
84.16 US gallons
Assuming you have proper filtration, you should abide by the one inch of fish per five gallons of water. This would mean a total of 13 total inches of fish.
Not enough information. Measurements needed are length, width, and height.
4.329004 gallons.
You would need 2,451 feet of 2-inch pipe for 400 gallons.
A aquarium that size could hold about 50 gallons of water. Remember when stocking your aquarium that, as a rule of thumb, when keeping a freshwater aquarium you should have about one inch of fish for every two gallons until it cycles; then you can go with one inch of fish per gallon. If you plan on setting up a saltwater tank, which is much more difficult to set-up and maintain, go with 1 inch of fish for every four gallons for the first six months; then one inch of fish for every two gallons. If keeping goldfish you should have about 1 inch of fish for every four gallons until the tank cycles; then one inch of fish for every two gallons.
As a very rough estimate, I would suggest 40 gallons!
6.23377 US gallons.
12.62 acre-inch contains 342,687.09 US gallons. (1 acre-inch is 27,154.3 gallons)