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Rapid PH drop after res change

Hello all, Everything was going OK and res fairly stable with only slight drop in PH. Decided to do a res change at 3 weeks into flower went in at 1.0ec and 6 PH had to go away for a day so 48 hours later PH has dropped to 4.8 and ec up to 1.1.

I did use chlorinated tap water to flush the system and refill, thought I would give it a day or 2 then add Hydroguard. Res temps around 21. I have adjusted the PH tonight back to 6 and added Hydroguard.

The plants do not have a great root system...

Rapid PH drop after res change

July 20, 2019 at 09:16PM

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