samedi 10 février 2018

Help please!

Hi guys!
Im new to forums, so not sure how this works. But here goes....
I have an established reef tank (6years old). And noticed 2 days ago, white patches growing on the sand. Everything i have searched for isnt like what i have got. I have brown algae growing on the sand too. All my parameters are spot on. Any ideas guys? Thanks in advance!



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