umm duzint tinfoil intensafy the light and burn plants??? thats why i havnt...and it wont melt with the cfls man when i get the hps i wont use the tank i have a fan uptop for ventalation theres a hole at the bottom so it can get out with ease and have fresh air come in so its g i think also.......if the leafs look like there all sparkly almost like crytals is that an early sign of a female?