Discolouration on bubble coral

[tomtom14]

Hi, I have had a 55l reef tank with a bicolour blenny.

Yesterday I noticed a white colour that looked like frost on the top of part of my bubble coral. I have no idear what it is can you help? I have had the coral for about 2 months and it has being doing fine. I have some harder corals to look after and they are fine, this includes a red bubble tip anemone, so doubt it is water quality as the bubble coral is hardier than my other corals. Any help is on what this is is much appreciated. Thanks for reading.

 

[tomtom14]

this is a photo of it


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[Sniperhank]

Is this at the top of the bubble coral?


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[tomtom14]

Yes and it may look like the light reflecting on the bubble coral but when the light goes out it's still there.


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[Sniperhank]

I don't think it is reflected light at all. Possibly starting to grow too close to the light for its own liking maybe?

 

[tomtom14]

Thanks for the reply I will start slowly moving it away from the light so it isn't so intense. Hopefully that will do the trick.


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