What kind of waterproof material should I choose to make a fish tank?

To make a fish tank, the fish are alive. If you choose waterproof materials, you must choose environmentally friendly, non-toxic, tasteless and pollution-free, with good waterproof performance. At present, many waterproof projects are only aimed at inanimate and living waterproof coatings are few. Qinglong brand HG203 sealing waterproof coating takes water as curing agent, and the coating has no solvent volatilization, which can be used in drinking water engineering after testing by testing center. The waterproof effect is very good. Since it can be used in drinking water projects, it should be no problem to make a fish tank waterproof.