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Calcium deficiency?
Crownlaurastarted grow question 8 months ago
Is this a calcium deficiency? Noticed a couple of older leaves have brown spots. Sorry the picture isn’t great, I couldn’t get very close without moving plants out and I always end up damaging something when I take them out!
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SkunkleDamoanswered grow question 8 months ago
It does but you are quite far into flower. Most calmag has nitrogen too. Decide how long you think you have left as upto two will likely be flush
Flipsieanswered grow question 8 months ago
Inrease the PH slightly to 6.5. Your nutrients say, that they are for tapwater with a ph of 7.5. I dont know the actual PH they produce, but maby your tap water has a lower PH then 7.5 and the fertilizer corrects it too far down. The slightly burnt tips and glossy dark surface can also be a sign of low PH, they arent always nutrient excess.
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gottagrowsometimeanswered grow question 8 months ago
Yeah.
But I'm not sure lack of in the sub r ur ph is too low.
6.2 is at the lower end of where your ph should be.
6.5 is best to have. Gives a wider window of ph swings. 6.7 been optimal but increase your ph and nutrients & follow up water feeds. Make sure the phs of all fluids u put in be .1-2 ph off. Any further than that. Itll cause issues.
Add calmag 150-200ppm to your tap..if its a calmag + jst add 150ml.
Look to new growth for signs of relief..
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