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PH Fluctuations and/or Nutrient Issues?
Chow_13started grow question 4 years ago
I'm Running a Recirculating Deep Water Culture System( hydro). Had PH dropping dramatically a few days back but did a full water change and everything has stabilized. Just Flipped to a 12/12. Does it look like that was the issue or is it nutrient toxicity/deficiency. Or Stress?
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Robertsanswered grow question 4 years ago
The deficiencys showing are likely from ph locking out nutrition when it fell. If they progress more then you have a issue. Looks like potassium and cal mag. Is why I say it's from the ph drop. Good luck and happy growing 🌲🌲🌲👊
The8thChevronanswered grow question 4 years ago
With a dramatic drop in pH, a res change is always a good idea. If the EC rises as pH falls, then you're feeding too much.
Here's where it gets interesting. If your EC remains stable while pH falls, then raise your EC if its lower than 1.0 and lower EC if it's over 1.4. This is because of a possible leeching effect from your plant into the res.
In any case, ALWAYS do a res change if pH drops dramatically. It's a pain, especially if it's only been a few days since the previous res change, but believe me it's worth it.
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