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Dark leaves in DWC
SION420started grow question 4 years ago
Hey guys, this NL auto is very dark compared with the other plants. Also had some spots on the leaves, but I did a Res change and defoliation of sick, bud site blocking leaves. Could it be a Cal-Mag deficiency? I was thinking nitrogen toxicity but no clawing of leaves.
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OutForRealanswered grow question 4 years ago
Yes it would be a calcium deficiency at a early stage but can't be sure , you'r not running into a N toxicity to me BUT your plants are dark green so no problems if you cu a bit on the N in your feeding , of course purple light are well known to induce dark green foliage ( I've experimented it ((depending on the spectrum)) so it could be simply due to that fact. You' on the way and these issues are minor but can still be corrected. Free advice , in my opinion you can feed with a 1.8ec solution without seeing signs of over feeding
Darkwarsongsanswered grow question 4 years ago
Please don't just listen to the answers who didn't look any deeper.. I looked at what you are using.. I see you are using a Calcium Supplement Product.. Professor's Go Green. I am unfamiliar so it could be a Calcium Def.. But if you are using a Product that has enough Calcium you'd need to look a little farther then just a Calcium Def. Pm Me if your interested in talking further and sharing more Bottle Information lol.
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OGgrowsanswered grow question 4 years ago
Hi @SION420 Without a doubt that it is a calcium deficiency, due to irregular burns in the center of the leaf, at the beginning of the calcium deficiency it is common for the leaves to have a dark hue and then begin to clear and yellow in the most advanced state of the deficiency, it does not seem to me to be excess nitrogen but you never know for sure. apply a good source of calcium for now and cut the nitrogen. good luck mate 👍
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