Koi Forum • Algae growing on fish!! what to do? : Koi Health
Hi all, been looking round the forum for a while but never needed to post untill now.
I have a 6000 litre pond with a cloverleaf 4 chamber filter and UV clarifier. everything is great except one of my Blue Orf has started turning green with what looks like Algae, none of the other fish are affected.