How To Use Progressive Web App aka PWA On 420 Magazine Forum
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it looks like a nitrogen deficiency. Just add some plant food high on Nitrogen. They way to tell how much Nitrogen is in a fertilizer formula, is to look at the three numbers that would be label on the product. Example if a product is label (5-2-2) the first number of the three is your nitrogen content on this product.
if you're already adding food to your plants, then you should check the PH of your plant food mixture. Also went you water your girls check the PH level on your plants runoff water.