when i run everything as ive shown it usually stays between 70 & 80 degrees. but when i throw on the mh it soars up to 90 i wouldn let it pass that so it prob could get hotter..7.5 volts the fans run on. an my mh isnt air cooled. i was thinking of getting a glass panel to put under mh light and also use the fans in there to get hot air out faster.. what you mean genetics- type strain i got is it?? and whats the passive intake method??