Yeah, these are the Gavita LEP lamps not their HID ones. I would've loved to have gone with the Gavita HID ballasts too, but I don't have 240V lines. I try have at least 12" of space between the lights and plants, then stake things into place if they're getting toasty at the tips. If that happens, as it did for two of the ISS tops, I just sacrifice the bleached/toasted part when it comes time to trim the colas up. You can always just toss that stuff into making BHO or bubble hash.