I was using Stability to cycle this tank two week ago. With every things being brand new. I 've found there is a thread about Stability in this site. So i took a chance and try it. Bum, my tank cycle completed in 8 days.This tank running with FX5 and a wet & dry sump. And pool filter sand. Anyway here are some pics of my set up. 13 African peacocks and Haps. 4 synodontis petricola catfish.