Thread: Water PPM ?
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Old 05-22-2012, 07:11 PM
Stan Stan is offline
Senior Member
Join Date: Apr 2011
Posts: 213

I check the PPM in the reservoir every week. Mine is around 125 PPM from the tap. If the plants I'm growing calls for say 1000 PPM I just add enough nutes until I hit that mark. I'll check 7 days later and will add more nutes to hit that mark again. Every 2 weeks I empty out reservoir fill it with tap water and add the nutes again.
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