About a week and a half ago I was cleaning my tank. Before I begand cleaning my ammonia levels and PH were right where they need to be. I vacumed the gravel and cleaned the filter because it had been about 3 or 4 months since I last cleaned it(Aquaclear 500, two sponges). I removed the sponges and cleaned them in old tank water. Refilled the tank with new dechlorinated water. Left the tank over night. The next day I noticed a fish with Ick, bought some Ick treatment. After finishing the 5th and final day of the treatment my water began to becoming increasinly cloudy. I checked the ammonia and it was sky high 8ppm. I dont know why my fish arnt dead yet. Today the tank is so cloudy I cant see the back of it. It's almost like a white cloud, you can kinda see it rolling with the current from the filter. Any ideas? I was thiniking I may have cleaned my filter sponges and gravel too much, not leaving enough beneficial bacteria, I have trouble thinking this is possible. Maybe I got rid of too much bacteria and the Ick treatment finished it off. I've done everythign I know to do. Oh yeah sorry I forgot, it's a 75g and I've been doing partial water changes frequently, almost every day. 30%, 40%. The water clears up a bit and ammonia drops just to rise the high levels and cloudiness again the next day. Any help you can give me will be greatly appreciated. Thanks