After 2 weeks it started acting wacky. It was right in the middle of ph for nutes. It screwd 5 gallons of nutrient rich water uo. Went from 7 to 10 to 7 . I had to use a manual ph to get it close. I had to calibrate every week . Then it just wouldn't work anymore. Ill be getting my money back anf buying a better one.
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