Tony,
Did you try to modifiy your zeo dosing regiment as suggested by G.Alexander? I have found with new modified dosing schedule and the addition of a vortech my green film algae/cyano is all but gone again.
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- Greg
90G : Light - Tek 6xT5 | Skim - EuroReef RS135 | Flow - 2xVortech MP40W | Control - Reef Keeper 2
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