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Can't deal with yellowing leaves in 4th week of flowering
purgenstarted grow question 3 years ago
Been having this problem for a few weeks. I suppose its deficiency of Mag and for the last week or so I've been giving increased portion of CalMag (for 1.5l of distilled water TriPart grow 2.1, micro 2.1, bloom 3, Calmag 12ml). Should I give them more time or its something else?
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Leaves. Color - Yellow
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Chow_13answered grow question 3 years ago
I would increase the grow to match the bloom for one feeding then go back to the regular ratio, but increase everything by 25% she is hungry and getting bigger. Chances are switching from late growth to early bloom to soon caused it. Keep an eye on the leaf tips, if they start to burn then your feeding to much. Be sure to water in between feedings so you don't get any salt buildup which can cause similar looking issues. I just got 2 cheap PH pen's and when they dont match closely then I will calibrate them. PH pens will slowly go out of wack and need to be re-calibrated.
purgenanswered grow question 3 years ago
Also most of the stems are red, I've read somewhere that this is one of the indicators of magnesium def
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purgenanswered grow question 3 years ago
There are some brown spots too (first leaves which started yellowing had these). Tripart brand is General Hydroponics and yeah, ratios are according to the medium feed chart (found it on their website). I tried to check Ph with a shitty Ph tester, even distilled water's Ph it shows differently everyday so can't be sure about Ph. Maybe I'll buy better one, gotta do some research first.
Also, if it's nitrogen def, is it enough just to increase of these Tripart dosage or I need to buy other nutrients?
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Chow_13answered grow question 3 years ago
looks more like nitrogen def to me. is the yellowing starting from the bottom. cal-mag you will get brown spots and the yellowing is usually stripes with green in-between. what brand is this tri part nuturent. are the ratios according to the feed chart? also check your ph. If its out of range then that can lockout nuturents
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purgenanswered grow question 3 years ago
Don't know if strains are important, but first two pictures are RQS Special Queen, last one is RQS Royal Domina
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