coraline algae

[horsin1963]

https://forums.saltwaterfish.com/data/smilies/banana.gif

Good morning all, I just had a short Q's. I have had a 220 gal tank set up for about three weeks now. It has about 250 lbs of rock in it. I had just changed my lighting to a t-8 18K Power-Glo and a new Marine-Glo Actinic. I know the lighting that I had from the start wasnt the best but the coraline algae that was growing looked purple.... heres the question

ITS TURNED GRAY AND GREEN is that ok will it come back???

 

[kynekke]

I noticed that mine cycles... parts will turn grey then return to purple.

 

[digitydash]

It maybe a calcium issue.Coraline neads it to grow or it not used to the brighter lights yet.

 

[horsin1963]

THX its had me worried I have never used the 18K B4 was told it is a good light. been using Purple up to help it out then change my lights I wanted to chang them back