For two months I've been battling cloudy water. At the same time, my corals turned pale, some bleached, but retained polyps. Nothing has died, but polyp extension is reduced. I've added carbon, I've done water changes, cranked up my skimmer etc. Last night I did a 100% water change fearing a contaminant may be in the water. It was a success and nothing died over night or through the day. The water was crystal clear last night. Tonight, it is once again milky white. I just don't know what to do at this point. Temp: 78-80 Sal.: 1.026 Alk : 156 ppm Calc: I'll get Mag: I'll get pH: 8.0-8.2 Lighting: 6 hrs 250 watt MH (transitioning back from LED) Calcium reactor maintains chemistry. Tank is bare bottom.