Why would my wellso that was happy and full suddenly wither up. It appears to be losing its vivid color and the skeleton is totally exposed. The tank is relatively new, its been up with coral in it for 4 months , wellso has been in it for 3 months and been very happy. Recently started dosing with sachem 1,2 .Could that possibly have any thing to do with its sad appearance. Nitrate is at 5, KH is 8, ..phosphate 0. Any thoughts are appreciated