RO water

[Woods]

Is RO water ok just sitting in a sterile tank?

 

[mr_X]

if the tank is not shielded from light, i think you should put a powerhead or air stone in it to keep it moving until use.
when i store my water standing still, it gets slimy....stagnant..
i keep a powerhead in one 30 gallon can and an airstone in the other.

 

[Anonymous]

For fish, it is fine. If you want to drink it, you should filter it with carbon. But, yeah, bacteria and algae will grow in there.