I'm setting up a small breeding and grow out rack and would like some advice/thoughts on using a fluval 406 as the return pump.
The rack will be 4x 20 longs above with a 40 breeder sump. The 406 will sit just below the 40B - so water will siphon into it. The 20 longs will be above the canister filter by ~24 inches (about the difference in water levels between the two tanks as well).
The second concern is then restricting/splitting/directing the flow into the 4 separate 20 longs. Could be really working that 406...
I guess this really warrants an experiment to see what the outflow is at a head of 2 ft.