Knights 1st Grow - Sour Diesel & Kosher Kush

Scarfinger68;1776312 said:

My initial thought is a "Phosphorus Deficiency" What is causing it is the question. It is either a lack of the nutrient or it is there but not able to be used by the plant.

I would first check the PH. Ph of the soil if you can. If you can't check soil PH, then check the runoff PH. Soil PH should be 5.5 to 6.5 for Phosphorus uptake.

My guess is that your runoff PH may be in the 4.0 range.

I would flush once or twice, check PH levels and then feed with a 1/2 strength mixture.

My plants do well when my runoff PH is in the 6.0 to 7.0 range. I do not check my soil PH.

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