Blacksteel
Aquarium Advice Activist
- Joined
- Mar 9, 2011
- Messages
- 178
I've been reading some posts and people seem to say that carbon isn't needed in a reef tank and i currently have a marineland 350 gph dual biowheel HOB filter with carbon filters on my 20 gal long. I'm just curious if a Refugium would be a good idea for my HOB filter? And if so what is a Refugium and what should be in it?