Ok, I'm glad you guy can help me. I have a 40 gal reef-in-progress with roughly 30-35lb. of live rock I'm am goin to add more rock with some corals eventually. I have the Coralife aqualight 1 96 watt 960nm antinic and 1 96 watt 50-50 (10k and 460nm) a bak pak skimmer and a emperor bio-wheel (w/out the wheel in it) I am just in the closing stages of a hair algae battle (it was BAD!!!!!) and and using carbon and phos-lock in my bio-wheel. I have 0 nitrite 0 nitate pH 8.0-8.3 Alk 280-350ppm (usually over 300 on test dip strips) Sal SG 1.024-1.025 Phosphate 0ppm Thats all i test. Ok, now to the problem I have mushroom corals, zoanthids, a green star polyp colony and a pink flower pot coral. (Which is doing well) The star polyp and the flowerpot look fine (flowerpot is fading a little) but all my other corals (mushroom and zoa's ) are shrunk up and losing their color. (Flowerpot not shrunk but fading) My zoa's and mushrooms looked great when I got them but now they look terrible all faded and shrunken. The zoa's still open, and spread a little (I think). I have added I small bottle of Purple Up and a 16oz bottle of Purple Tech and I only have one weak little patch of Coralline. I even added some coralline from a friends tank. No Coralline growth at all. I started dosing small amounts of (2 little fishies) iodine (looked like some zoas had a little more color) and some Reef Calcium last week. This week I am dosing 2 ml of iodine (recommended amount for 40gal) and 10 ml of Calcium (recommended amount). The tank is my first and it's been running for 2 years ( hair algae outbreak when I upgraded the lighting from 20watt strip to 192watt coralife) and I did alot of stuff wrong when I started (killed sand, but got live sand to put in it) and it was 6 months running before I added my first damsel. Fish and stuff are healthy Royal Gamma Yellow Tail damsel Brittle star Coral Banded Shrimp 1 astreus snail Various blue leg hermits (5 I think) Can anybody help me?