-Lamp could be aging or incorrect
-Heat problems cause loose buds
-Some strains grow fluffy (esp ones meant for outdoors in wet climates)
-light leaks cause fluff too

Good solid HPS with a new bulb, lower temps, check for light leaks, and add a carb synthesizer will help you out big time. Also consider trying a different strain.
stinkyattic Reviewed by stinkyattic on . Buds not tight or dense? 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! Rating: 5