I bought a diamond goby. I put him in the tank, and the guy went to town sifting sand. The tank was cloudy for days regardless of how much extra filter I ran. It shows I obviously didn't clean the sand very well. Anyways, during that time, the goni closed up. The tank has been clear a week or so now and the goni is still closed up. Last one I had do that didn't open up and withered away. Anything I can do? I've cleaned all the sand off, skimmer is working extra hard, I clean out the filters as much as I can to keep things clean. Params are fine. All other corals are open and happy. Thanks in advance!