The Grow Awards 2026 🏆 
Hello , i noticed some black/bluish spots on the l...
CRiSPrGrowanswered grow question 7y ago
hey DoDhLo, yeah i see those spots on the leaves. So basically you're overwatering this little seedling , this you can see from the puffy leaves especially the puffy space between the veins of the leaf. the overwatering is leading to PH fluctuations and the PH fluctuations are leading to those spots on the leaves. How to fix it ? simple : just follow a stricter wet/dry cycle and make sure you're watering with PH5.8 -PH6.... bonus question : what's the PH of rain water ? 5.5 ! hope this helps my friend ! 🚀
Experimentgreenanswered grow question 7y ago
I think its awesome you're reusing your soil, too many of us growers chuck our soil with no thought about it. You should have some decomposing of old roots inside which is essentially compost...but i really think you should top dress with something...compost, peat moss, whatever dry nutrient mix you think is right and little till into the top few inches otherwise you may pop up with a variety of deficiencies or other things to deal with if you don't plan on fertilizing with bottled nutrients etc.
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Athosanswered grow question 7y ago
The picture doesnt look to have any spot. Anyway, the black bluish patches are a sympton of phosphorous (P) deficiency.
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