Added GFO and this has popped up recently, ideas?
- Thread starter HAWK44
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Alex Cataldo
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It looks like cyanobacteria, check you nitrates and phosphates and try out something like Chemiclean
HAWK44
Active Member
I’ve run chemiclean recently, twice in fact, to no effect on the tank. I have unreadable nitrates on a Hannah checker and don’t have anything register on a Red Sea test. I want to say phosphates hang around .1-.2 area. Can confirm when I find my notes.
Waters
"...in perfect isolation, here behind my wall."
Definitely check your current numbers. Any quick change to the water chemistry often opens the door for other nuisance algae/bacteria to start taking over, which is, I am guessing, what happened when you started using the GFO.
