3/4 is about right, depending on your return pump power. i have a 40 with a mag 5(600gph) and i honestly think its not enough. I would stay in the 300-500 gph range, 300 for normal purposes, 500 if you want some hefty flow. Alot of people use Mag-Drive pumps, quality pumps that rarely jam or stop, alot of good comments of mag-drives, there on marine depot under powerheads.
__________________ 40 Gallon Reef: 80lbs LR, 250w MH, 15+ gal Sump, AquaC Remora, Koriala #2,#3
29 Gallon: My yellow angel (Sonny), 6 neons,7 other tetras and my CAE...ugh. hes huge |