What are the proper techniques when sulfur burning? I filled half the cup up with sulfur on my eco sulfur burner. Then I raised it 3ft above my plants in my room with the lights off and let it run for 6 hours. Vented for 2 hours before my light came on. I do not see ANY difference. I went in there to make sure nothing was burning down, and it was pretty smogged. I found this Do It Yourself Sulfur / Sulphur Burner - Hydroponic SuperSonicÂ , and was wondering if I should go about it this way. I feel like I might be to far into flowering to try reveg these mamas like he did. Only about 3 weeks left till finish, with big buds.