This is my first grow. I have 4 grandaddy purples from ILGM that are in ffof/perlite 75/25 mix. They have been in 7 gallon pots with the ffof for around 3 weeks. I have clawing issues with each of them. All I’ve been giving them is RO water with 3 mg of cal mag plus. Any insight would be helpful.
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Let’s start with this and I would like to know what exactly you are using for lights and what your high/low temps are.
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Thanks!
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Just an aside.
Ffof can be very nutrient rich for some strains. Adding cal mag usually adds nitrogen. My Ilgm were also a bit sensitive. I’d discontinue the cal mag for a week or two. See how they fare.
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