Imm running a 210 gallon tank with a 40 gallon sump. Gph is about 1600. The water runs through a cloth bag that I have stuffed with course and fine filter pads. It then runs into a chamber with about 10 liters of Seachems Matix. Them I have six pads of bio-chemsorb, that are supposed to treat 55 gallons apiece. Then it runs over another lip, through a sponge and into my tank. Ever since I installed it three weeks ago, my tank has been getting cloudy after only three days or so. Anyone have any advice on improvents? And also if the matrix gets dirty, will gravel vacuming butcher my bacteria? I have no idea........