I've got a 55-gallon, running one marineland 530 and a aquatech 30-60, one 2.5" senegal, one 3" needlefish, 3 1.5" dwarf gouramis, nitrate 5, nitrite .2, gh 100, kh 120, ph 7.5, tile bottom, the tank got cloudy so I did a 25% water change three days ago. It was momentarily better but has gotten worse now. I read forums talking about overfeeding being an issue, but I've cut back and its still an issue. Its sort of a greenish tint can I get a few tips from the pro's? Thanks guys, let me know if you need any more information to assist me.