Favite turning reddish brown

RevJDA

Premium Member
I brought a favite home from my LFS about three months ago. When I brought it home it was a really beautiful creamy-white color with flourescent green centers. At the time I had PC lighting (2-65 watt daylight and 2-65 watt actinic). Then, about a month ago I installed MH lighting (2-150watt MH with polished reflectors and 2-95 watt actinics). Since I installed the MH the color of the coral has changed to a light redish tan. I can see the green centers, but they are less noticeable. I placed the favite at the top of my tank, and is has good water flow around it (not directed at it). I have read that favites are very light adaptable. Is it getting too much light? My other concern is that I haven't seen any polyp extension or sweeper tentacles, even though I feed with DTs or phytoplex every day or two. I also use liquid life periodically.
 
A darkening of coloration is not the result of too much light, but rather more nutrient related. After feeding all of that plankton, I would check your nitrate and phosphate levels. I am guessing they are elevated above the desired amount thus creating your coloration issue.

FWIW, there is no evidence that stony corals benefit directly from phytoplankton. :)
 
To me, the creamy white sounds like it wasn't in best of health and is now getting better. It is adapting and to me sounds like a positive.
 
the same thing happened to me only the coral was bright green and molted brown. i bought it on saturday and now that it is in the tank it turned brown. is it just adapting to the new lighting? i did a water change before i put it in so the water perameters should be okay.
 
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