yep, t5 thats what i thought you were using. i had one for a while but never really used it. a friend has one he uses for early veg and likes it for that. but i would not use it to flower. like sub said a 600 hid or like he was saying about 2 400 8" apart. im not sure if you trays big enough. i bet you could get 300-400g off a 600w. also my buddy keeps his t5 i think about 8-12in above the tops.
do you know the cfm of that fan?
i would make both of those fans exhaust and use a vent opening for intake like what sub was saying. i like to get one of those 3m heppa filters for $3 at home depot and rig that to filter the incoming air. i do that for my hoods as well and it keeps the glass nice and clean.
are you going to top? supercrop? scrog?


im happy things are looking so well, keep up the good work. :thumbsup: