- Joined
- Mar 2, 2014
- Messages
- 544
- Reaction score
- 54
- Location
- Minneapolis MN
- What state or country do you live in
- Minnesota
I have been reading articles and watching video after video yet still have no solid idea why one is better than the other. I have a 40 gallon sump on a 125 gallon tank. And just hope that people with experience can shed some light on why one is better than the other.

