problems with air circulation

ok so ive a grow tent 4x4x6 (feet) with a 600 watt ballast that runs both metal halide and hps.im running my 600w metal halide through a cool tube that is connected to an inline fan with ducting,ive got a carbon filter in the tent connected to an extractor fan that is connected to ducting,ive also got an oscillating fan in the tent.now there is an opening in the tent that is letting air in,now my problem is do i actually need to get an inline fan with ducting to bring air into the room or is what i have already good enough?the fan i have connected to the carbon filter is so powerful it is suckin air in tru the opening in the side of the tent.my highest recorded temp was 27.8 celcius,but it is in a place that gets a bit of heat during the day,at night when the temp goes down outside it runs at a nice temp inside the tent.the warm weather will soon be gone where i live so hopefully it will be more stable.so again looking at what i have,do i really need to get yet another fan to bring air in...i would really love some experienced growers help on this one,i have 12 beautiful origanil big buddha chees straight from amsterdam and want them to have a great life thanks!!

As long as you are exhausting out of the room your tent is in then the ambient room air will be passively drawn into the tent through opening your lower flaps.

However if you are exhausting into the room with your tent in it you will just be recirculating old warm air.




J

cheers for that! i was thinking that alright,i just wanted a few more opinions!basically its a wooden shed that generates a bit of heat when its warm out because of a black felt roof,it also doesnt hold a lot of heat when its cold. the tent is not as hot as it would be if there was no cool tube so the air being evacuated is not so hot,i was thinking for when the cold season comes maybe that air would be ok because of the little bit of heat in it,plus the room that the air is being ventilated into gets a nice bit of fresh air too.??

yeah passive intake is usually fine in this type of situation...like jondamon said just get it outside completely so it doesn't get recirculated or you'll just end up making a convection oven

aint that the truth! ill just get it set up so the little ladies are in the best conditions no point in having a silly little problem like this one that can be fixed...

could i get some sort of air filter and connect it back into the tent??