Further

@CURATI_DA_SOLO, if you're using coco substrate, you need to water plants daily, and even more, that's the secret.

@CURATI_DA_SOLO, I used 400w led on 1.6mX1.6m. I growed some plants to understand that it's enough for good results, but lights must be 30-40cm above plants, not less. Also hot temperature, above 27C, makes buds airy. And, of course, genetics.

@CURATI_DA_SOLO, you right, two weeks more could give more interesting results. But obstacles push me to cut it earlier. Also lights was too strong, so buds are airy