I bought this goniopora 3 weeks ago and it has really settled in nicely, or at least I thought. On Thursday night i did a water change and on Friday the polyps did come out but barely. I tested everything here it is: Nitrates: 2.5, Phosphates: 0, Specific Gravity: 1.025, Temp: 78 degrees, Alkalinity: 7.8, Calcium: 440. The problem I saw was that the phosphate test (salifert) was coming back as 0. I fed all of the corals in hopes that the phosphate would jump up. Now today the goniopora isn't even opening, what should I do?