So I'm building a new 55 gallon Rift tank. Looking for suggestions or anything I have not thought of. I'm starting with a 30 PPI Mattenfilter from Stephan in the corner. On the bottom of the tank I'm starting with some egg crate (corner cut for the filter) and two 75 watt Hydor undergravel heaters. Then white silica sand and assorted rock. Should I have additional water movement or will the lifts from the filter be enough? I have six yellow labs, a dozen demasoni and four synodontis petricola.