You can try, but in my opinion that water is unusable. I recommend a new ro membrane and di resin, maybe even add an additional second di unit. I use two di chambers to control mine.OK, so I tested phos in the RODI container again and got .53 on regular Hannah phosphate low range tester
Should I go ahead and put a couple drops of phosphate RX in there to drop it down to 0 before I do another water change in a few days?
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