i am a new grower i have a tropicana banana in a 15 litre pot under a 600w hps i have been feeding a and b , rhizotonic in low doses giving a litre of water a time it is in the 3rd week ov veg and the large fan leaves are going yellow and brown at the bottom and the newer leaves at the top are lookin crumpled up and dry i have an oscillating fan and an outtake fan does anybody know what could be the problem
If you’re using good nutrients, cannabis plant may still show signs of a magnesium deficiency if the pH at the roots is too low. That is because when the pH of your root zone is not in the correct range, your cannabis cannot properly absorb magnesium through the roots.
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