What's the cause of this? Heeelllppp!

Roger A. Shrubber

Well-Known Member
Growing in DWC, so need more magnesium?
yeah, but i'd still go with the foliar spray, instead of changing the nute ratio. at a guess, i'd say maybe their ph is a little low.
it doesn't look calcium deficient, or iron deficient, both of which usually go hand in hand with mag deficiency, if it's from under feeding. so the other easy thing to check i ph....is your meter calibrated properly? when was the last time you checked it?
 

Wyche431

Active Member
yeah, but i'd still go with the foliar spray, instead of changing the nute ratio. at a guess, i'd say maybe their ph is a little low.
it doesn't look calcium deficient, or iron deficient, both of which usually go hand in hand with mag deficiency, if it's from under feeding. so the other easy thing to check i ph....is your meter calibrated properly? when was the last time you checked it?
Been a while since I checked my meter, that's probably the problem
 
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