Originally Posted by Hinds04
what will the sand do exactly for a sump? I mean does it play a huge role? Wont I get the most benefit from the live rock.
Sand will DESTORY the impellor on a return pump. no sand. with no baffles a filter sock will do a good job of keeping the micro bubbles down. sand does not go in a sump but it does go in a refugium. 4-6 inches. the anaerobic bacteria break down nitrate into N2 and O2
. live rock is perfect for a sump that is the Berlin method.
Actually it gets broken down to N2 and CO2