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Is high ORP achievable with very green water?

achievable high ORP water
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Is high ORP achievable with very green water?

0
10

Hi WWM crew! I am trying to improve water quality and control algae in my 150g Malawi mbuna setup. To that end I recently started injecting ozone through a protein skimmer, mindful of your guidelines/precautions in your ozone and ORP FAQs. In the past few days, however, RedOx potential appears to have skyrocketed from ~270mV to well past the safe range. Redox potential as of this morning is ~440mV but green water remains in my tank. This is the problem. I gather from this that 1) it is possible that high RedOx potential and green water are not mutually exclusive, or 2) my brand-new, cleaned and calibrated ORP probe is reading a voltage that is higher than actual. I would very much appreciate your opinion as to whether I can continue to inject ozone at low dosage despite my not-so-sure ORP of 440mV until the algae is defeated. Thanks in adv

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