I'm having a problem with a zoa colony. It was mounted to a small rock by using super glue. It has about 30 "heads" on it. A few of them will open, but the rest of them are closed. They have been in the tank for 2 weeks and so far, I've only seen about 5 or 6 of them open up. Some of them will peek through by opening about 1/3, but they will not fully open. My water quality is pretty good: Ammonia 0 Nitrite 0 Nitrate 0 Phosphate 0 pH 8.2 Alk 3.65 dKH 10.4 Calcium 460 My temp runs about 78F. Salinity is kept around 1.022 --- 1.024 I don't understand why this particular colony won't open. It was doing fine in the store when I bought it. I've tried locating it in different places in the tank. Higher/lower flow or More/less light. I'll leave it in a spot for 2-3 days and then move it to see if that helps. No luck. I'm running a 30g tall with 130w of power compact. 65w actenic and 65w daylight 10,000K. 5" DSB in the tank. 27 pounds of mature live rock thats covered in coraline. 9 astrea snails. 3 margarite snails (haven't kicked the bucket yet, after 3 weeks at 78F), 5 small mexican reg leg hermits, 1 watchman goby 3" and one damsel 1.5" , 4 green stripe mushrooms, 1 tiny clam (was attached to a piece of live rock), 1 fuzzy green mushroom, 4 zoa frags, and one branch of stoney coral. I have a CPR HOB refugium with 24w daylight. Big clump of cheatomorpha. 3" DSB. 2 astrea snails. About 1 pound of live rock. My other zoa colonies are doing good. My mushrooms and my stoney coral are also doing well. Any ideas?