- Joined
- Dec 5, 2017
- Messages
- 72
- Reaction score
- 15
I’m setting up a 220 gallon tank that I want to make acro dominant. I like the idea of the COR pumps from Neptune so I can connect them to my Apex. I want to do two pumps because I have dual overflows with separate returns. The return lines are 1-1/4”, so should I do two COR15s or COR20s?