Nutrients needed?

Orin190

Well-Known Member
Growing in FFHF and I am 6 weeks in. Had issues at the beginning because I had them in probably the worst soil I could have picked for the first 2 weeks. Pretty sure I almost killed them so I transplanted to HF. I have given only tap water and last watering a dose of cal mag. My buddy tells me no need for any nutrients but I am starting to think otherwise. They are in 3 gallon pots. Grandaddy Purple Auto. Problem is he has grown weed before and I haven't so idfk. Please help? I had bought the happy farms trio but he talked me out of it so I cancelled it.
 

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