I have a 55 gallon tank. The lighting system is Solar Xtreme High Output 448. The blue lights are one for about 8 hours a day and the white ones for about 6 hours. Live sand is about an inch (less not more) and I have 7 large pieces of live rock and then a large box dry rock that's been in about a week (can't remember the weight but it was HEAVY). The filtration is one dual filters set on top of the tank continuously flowing and a separate single filter (Penquin 350 and Penquin 200). The water movement appears good. I use distilled water and reef salt mixing 1 cup of salt per 2 gallons of water and let set for a day before I add to tank. The tank did cycle between 8/20 - 9/20 (I was, at that time having the LFS do the testing so I do not know the numbers but I went in 1 - 2x a week for testing). Since 9/20 I have added (too much) two clowns, then a Tang, then a small grouper. I also have some coral in the tank (again too fast but now trying to make sure i do EVERYTHING I can to maintain). I did a 15% water change yesterday (my third water change since beginning the tank. I began testing on Friday myself (at prompting of members here) and everything tested ok then Today after the water change I tested again and the phosphate is reading .5 I have posted about the phosphate on the beginners page but I am wondering if this would impact the Corals? Are they not opening because I moved them around? Or is there something else to consider.