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Drastic rise in ppm using top drip in hydroton
TopDrippinPimpstarted grow question 4 years ago
Hey... i am having a problem with my top drip on hydroton (week 1). My ppm rises dramatically over a day and a half. Im talking 300ppm to 800ppm.
Hydroton has been rinsed well before use. I have run dwc and rdwc before in hydroton without any problems. Anyone have an idea?
Thank
Solved
Setup. Substrates
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the_canna_scientistanswered grow question 4 years ago
I'm guessing top drip system, dripping into a DWC? Does the pump only turn on when the drip is running? Meaning, is the water in the bottom of the pots not circulating independently unless the pump turns on and increases the water level from the top, causing the water to move from the DWC back into the reservoir. When this was happening to me, PH and PPM would fluctuate whenever the drip pump would turn on. How frequently are you running the drip system? 15 minutes an hour while the light is on?
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