Zoas turning brown.. Help!!

Xler8n

New member
I have a colony of radioactive dragon eyes and green bay packers. i ve noticed today that some of the polyps are closed and turning brown... What can this be?
Nothing is close to them and i fragged off some of them a while back and those are doing fine. Only some in the colony are turning brown not all. They are ay about mid level in my tank but kind of under the center brace on my 75 gallon so they are not directly under the halides. I recently changed my light bulbs in my sunpod 150 watt X 2 for the first time to 14K Phoenix bulbs. This week they are running at 7 hours. I cant think of what it is either. I dipped them in an iodine dip just to be sure. Can it be a fungus of some sort? I am having a polyp of purple hornets comming on wednesday and im freaking out cuz i dont know if it will be safe.... This is one of the first corals i got and its been in my tank awhile. When i got my light fixture the bulbs in it were already 9 months old so basically none of my corals have seen new bulbs unitl now. Everything else is fine and i started out at 4 hours of light the first week i got them then gradually went up an hour each week. Please help
 
Try putting lighting diffusers, those new bulbs are a lot brighter.
By putting diffusers, your letting your corals re-acclimate to the newer stronger bulbs. they're probably getting light shock right now.
 
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