Hi all!
I have 2 tents in 1 room ,
2.4x1.2m tent and 1x1m tent
2 floor fans
I leave the windoway in the room open day and night to let cold air in the room
3x 600w hps cool hoods connected to 2 filters (8 inch and 6 inch) and2 fans sucking air outside
(8 inch fan and filter in bigger tent ...