Zoas loosing color?

AquaJunkie

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They have started browning in this last week.
Only half the colony has lost its color atm, does anyone know why this is happening??

There in a 10g with a par38 bulb 36w about 12" off the waters surface but I put xenia in 2 days ago and can already see where it's stalks have grabbed hold of my rock so that looks like it's doing really well.

Only things I've done differently this week is added 9w moonlight for 4 hours in the night and started topping off with rodi.

Also have several types of mushrooms, xenia, anthelia and all seem to have good growth.

ImageUploadedByTapatalk1381598021.217350.jpg
 

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