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Yellow-ish leaves and brown spots
Jarooooonstarted grow question 3 years ago
I ran into a small problem.
The leaves of my RQS Critical are getting quite yellow and brown spots appear on some of the leaves. PH is kept between 6.1 and 6.5 while growing in organic soil.
I feed according to the BioBizz schedule. Curled leaves have already been fixed.
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Leaves. Color - Yellow
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greenhousegrowgirlanswered grow question 3 years ago
Curled leaves are heat stress from the looks of it and I would guess at underwatering for your other problems. If it’s been too hot or the light too close, they are likely to be dehydrated as well. Biobizz is tough as with organic grows you often see the issue days, sometimes weeks after it occurred. This makes it very hard to troubleshoot. I had exactly the same kind of issue with my first grow ‘Wanda - week 10’.
ojetepelonanswered grow question 3 years ago
Your VPD is high that for sure try to decrease the heat or rise up humidity a little bit.
they look yelowish, biobizz have 2 tables 1 for high ec soil and other for light mix or equivalent
how frequently you use them? biobizz recommend to use them in every watering 2-3 per week, if you need to water them more often to fill the day gap between nutes you should add the rest days only tap water.
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Ezzjaybruhanswered grow question 3 years ago
Got cal mag in your feed? This is my suspected culprit. Looks like maybe you’re in soilless medium? I would be adding cal mag.
Also looks like some environmental issues with the leaves cupping or canoeing.
Having a diary helps, gives much more info for us to go off of.
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