90 lbs. of flourite must have taken 1000 gallons of water to rinse out to the point of only making the water kind of cloudy for a couple hours. It starts out like mud, and stays that way for a long time. Even now after 2 months in my 100g tank, I am cleaning mud from the sump. Still parts of the substrate are almost neutrally buoyant and fly all over the place when disturbed and cloud the water. I ended up capping the flourite with fine gravel and sand like they do with contaminated seabeds to keep it from making a complete mess of my filter. It seems to work that way, and the plants are happy too with their roots down in the flourite.
Last edited by traxiii; 07-17-2012 at 08:05 PM.