open wing mh in 3 x 3 tent for veg.

I let a neighbor who is becoming self sufficent- pulling away from mmj, disp, and blackmarket, and let them borrow my t-5's. Im using this plantmaxx 400 bulb with an open wing in the 3 x 3 growlab tent. Ive noticed its harder to reg temps with this. Ive been spoiled with kooltubes. Does anyone have a decent amount of experiance with open wings i could bounce some questions off?

Lol, yes the wing is hanging off an hps kooltube....thats hanging from the ceiling......lol im all about simplicity.

I remove all the glass from my reflectors and run open hoods but I do complete air exchanges at around every 45 seconds.

Could you walk me thru a complete air exchange please and thankyou

I have an inline fan on 24 hours a day. 20 on 4 off atm. In all fairness these blue whispers are prob the best bang for my buck ive gotten. Been running that fan since 2008 lmao
seperated and ready to stretch their legs now

Width x length x height. I use a 600 in a 4'x4'x7' or 112 sq. ft. I run a 171cfm fan to exhaust that 112 sq. ft. .
10"x16" passive intake with intake temp between 68-70 degrees.