if I remember right co2 does allow for higher temps but if it's gettin over 100 in there I'd agree you should start there and work once that's resolved

also depending on the type of strain a 400w hps won't grow huge like show buds especially if it's not extremely close to the plants 400 loses power quickly as you move it away that was definately a problem of mine on the first grow

a pic always helps give us some of the info if ya know temp and light distance maybe ph and ppm foods plant height how long in 12/12 etc
alwayssleepdeprived Reviewed by alwayssleepdeprived on . Leafy Light Buds in DWC When harvesting plants out of my DWC I always end up with leafy light buds. Some buds are better than others but overall the outcome is a letdown after what is expected. The environment does get too hot, GH 3 part solution was used, and the strain was sage n sour. What could be the main cause of this? Please feel free to ask more questions because I would love to learn how to get better. Rating: 5