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Ph drop after res change
Gzuscampstarted grow question 3 years ago
Ph dropped hard 24 hr after res change @ 60%. Had changed 1 week prior due to high ec + slowly dropping ph and added another air stone. Turned off the air stone for an hour, no change so likely not acid rain situation. Ph up’d, plant never showed signs of being unhappy. Thoughts?
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Hashyanswered grow question 3 years ago
I have had this a few times. I'm not sure what causes it but my theory is all to do with the nutrients. I'm thinking that the nitrogen increases Ph as during flower you use less N. I just let it drift down then PH up when it happens.
Gzuscampanswered grow question 3 years ago
@hashy thanks, that’s kind of how I’m feeling about it. Plant looks happy and I had cut nutes down (ppm about 850, had been heavy feeder up to this point) as ec was rising and ph falling. No burn which is weird as everyone else seems to be running much lower ppm at all stages.
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