Tobykourtney
Aquarium Advice Addict
- Joined
- Feb 16, 2013
- Messages
- 1,347
I'm starting a 20 gallon with 10 gallon sump and was trying to figure out what size bulkhead for intake and return is needed. I'm aiming for 300 gph flow. I'm thinking 1 inch bulkhead with .5 inch return. Does this sound right?