Hi everyone, I've been growing for 2 years indoors and am happy with the results for the most part. I am using a simple hydro setup with a 250W Hortilux blue lamp. Quality is good so I don't know why I am being picky. the problem is the buds are not that big and or tight or compressed, more like airy and light. One of my friends said it could be C02 defiency but i don't know. Any ideas? Thanks!