I bought another power head for the tank for a tad more water movement. The problem, I pointed it down to get water movement along the back wall of the tank and into the live rock caves. Everything was fine for a day or two then the zoas and polyps weren't opening up, this other soft coral I have started shrinking and my devils hand shrink up. I am guessing that the power head stirred up the sand bed and that is my problem. I did a water change today to see if that helps and will do another one Sunday. On a good note, the new skimmer ig kicking %&**.