i have the cab backed up and vented to a window out the back of my residence. and the window is covered by a small grove of bamboo. but thanks for looking out zandor. and yes the heat is a problem but i have a new layout for my cab. and lip i think i will be doing 1 or maybe 2 plants and do somesort of scrog or sog tech on it. the reason i asked was because i got a great deal on a 75W hps and new it would help next time.