Just put your hand a inch above your plants and lower your light as close as possible to the point that its comfortable for your hand to be under for at least minute or so.the more airflow the closer you can go.looking forward to new picsmy 1000 watt is cooled by a 630 cfm exhaust blower so i can put that lght pretty close. Ill have some fresh pics tomorow of the S.A.G.E. x OG KUSH. Theres buds eerywhere, but thy are very small. I can only guss on the flowering time because a leggy plant likethat seems like it would take a longer time to flower. So im expectig to harvest around last week of jly first week ofaugust. If non of these plants produce respectabe buds Ill turn all four of tem into bubble hash.