If you've got the money to spend on a 400w HPS system, I'd go with that. It'll require stricter ventilation than a cluster of CFLs would, but the speed of growth and propensity to grow HUGE fast makes up for it IMHO.
Mr. Clandestine Reviewed by Mr. Clandestine on . Slow grow. Does my light suck?? I have a 120 watt Philips Agro Lite. My plant has been under it for about a week and has grow about 4 cm and thats it. Its going sooooo slow and im getting mad. Should i return my light and get like a 400 watt HPS or CFL. I think so. Any advice? Rating: 5