60 gallon SA Cichlid tank. 4wpg, 2 Emporer 280's, 3 Convicts, 4 Firmouths, 2 Severums, planted, 100 lbs of Flourite. Has been cloudy for over 2 weeks. Several water changes, last one Saturday (50%). Just tested my water - Ammonia 0ppm, Nitrites 0ppm, Nitrates 5ppm, 80 deg, PH @ 6.8. Removed both...