How much ventilation do i need?

[Issareign]

60 x 60 x 120 cm grown tent, with either cfl's or t5's. will a decent pc fan be enough?

also, how many plants could i fit in there?

thanks.

 

[panhead]

Im from the states so i have no idea what your dimensions represent in inches or feet,i do know that computer fans suck ass,dont waste your time with those lil fartin ass things,hit up a hardware store or a home depot & buy a couple inline fans,one for exhaust & one for intake.

You can never have too much ventilation,too much is still never enough,get as much as you can .

 

[t dub c]

All you would really need if you used t5's is one out take fan , mabe a 6'' of 4''. Then just have a filtered passive intake hole, you always want a negative air presure inside the grow cabinet. peace

 

[Issareign]

Im from the states so i have no idea what your dimensions represent in inches or feet,i do know that computer fans suck ass,dont waste your time with those lil fartin ass things,hit up a hardware store or a home depot & buy a couple inline fans,one for exhaust & one for intake.

You can never have too much ventilation,too much is still never enough,get as much as you can .

i beleive 60 cm is about 21 inches. that being said, how much cfm do i need?

 

[t dub c]

150cfm would prob be good, but you could have way more if you want.

 

[Issareign]

cool dude. thanks.

 

[t dub c]

Well the thing is with my 4 2' t5's that I have stuck in a small closet for the mom, also the same for clones, if I have a fan for an outake it makes my humidity way to low and plus the temp stay just right at 26 degree's C without a fan so I just dont bother but when it comes to flowering with t5's I know nothing........

 

[SayNoToDrugs]

Those light wont produce alot of heat, but 2 12' fans( exhaust and intake) and then a fan kinda blowing between the lights and plants should be fine. But that will be a challenge considering how close those lights need to be. But i doubt heat will be a problem.

 

[email468]

with HIDs, I would try to exchange the air about three times a minute. For CFLs, I would think 1 or 2 times would be more than adequate (it also will help keep CO2 available).

i'm going to convert to feet for a moment 2 x 2 x 4 = 16 cubic feet so a 20 CFM fan would exhaust the room once every minute. a 60 CFM fan would do it 3 times.