- Joined
- Feb 5, 2017
- Messages
- 41
- Reaction score
- 8
So I made a bit of a mistake! I needed a circulation fan for my tank, and I guessed the gph wrong. I got a 798 gph circulation fan, and my poor tank looks like a whirlpool! I do not have it going (obviously!). Which changed size, or however it's categorized, do I need? Would a 500-540 be more appropriate for a 10 gallon tank?