I had a malfunction ( major and dumped a ton of monsodium phospate ( 8 tbsp ) into my 225 gallon reef all in 1 day... Phospahate is off the chart on my Hanna ULR at 0.90 and flashing- water turns completely blue after adding reagent when testing.. I already did about 120 gallon in water changes.. I have been dripping lanthunum chloride by SeaKlear commercial grade ( 10mils a day ) to a gallon of Ro/Water for the past 2 days and still no drop in PO4 . i am at a loss... @Randy, seems teardown and rebuild is the only way?
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