So I started a grow and the plants smelled dank when they were young, now after 3 weeks of budding they hardly smell at all. I'm growing in half black gold half worm castings under an L.E.D. in a small grow tent. I used FloraNova grow and FloraNova bloom. I'm on week 3 of bloom.
I'm thinking they just used up the nutrients from the worm castings. If so how do I respond.
My second thought is it's lack of c02 since my ventilation is minimal to keep up RH.