So I've been trying hard to keep phosphates very low and doing weekly water changes to keep the water quality very clean. Perhaps too clean from the sounds of it. I do dose acropower almost daily (small amounts) and feed the fish a few times aday. I'm not convinced my phosphates are a true zero for I did have some algae on the back glass and some cyano that I attributed to larger daily dosings of acropower. I run gfo and carbon continuously and alternate replacing those weekly. I noticed this morning that PE was better than during the night but no where near some pics I have seen on this thread. Wondering if PE is a tank to tank thing or a sign of happy/healthy coral?