FirstContact
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How high on PO4 can you go in a fish QT? Right now I’m at 0.224 ppm with the Hanna ULR. At what level do the fish start to care?
Fish QT & PO4
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ndrwater
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Not 100% sure fish only systems care all that much. Now if you have a fish only with live rock (fowlr) YOU may care as nuisance algae like hair algae may proliferate with phos numbers like that. Things like GFO work wonders for dropping Phosphates.
Randy Holmes-Farley
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My Tank Thread
I agree they do not care. 
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FirstContact
Active Member
Yes! One less tank to change water on!
