Really Need Help With Grow Tent

have cooling out of the tent in the same room ( pedastal fan ) and vent the out-take to a different area/room. temps should stay steady

Originally Posted by delvite

have cooling out of the tent in the same room ( pedastal fan ) and vent the out-take to a different area/room. temps should stay steady

Nice tip i will turn on ceiling fan and I have windows open so i dont need to vent to another room

Originally Posted by bombasticson

Alright I'm wondering is it possible to get temps in a grow tent to match temps outside of the tent, right now I have a 400watt hps, 8 inch booster fan for exhaust and a 4 inch booster fan for intake. It is summer weather and I'm expecting temps to get up to 90 some days, right now it is 82 in my house and in the tent its 88. I'm thinking of getting some real inline fans, would this make it possible to match the room temperature?

You have an 8 inch for exhaust and only 4 in for intake? No other passive intake? that is your problem right there...For an 8 inch exhaust, you're gonna need at LEAST 8 inches for the intake, preferably more. Do you notice a lot of negative pressure when your tent is sealed? That is because the 8 inch exhaust is trying to pull way more air that your intake can supply. You don't even really need an intake fan, and instead I would take that 4 inch booster fan, get an air cooled hood, and use the 4inch booster to exhaust the heat from the light. Then just open some passive intake holes to let fresh air in, but remember, your intake needs to be at LEAST as large as your exhaust, preferably larger, to effectively exchange the air in your tent in a timely manner and match the temps of the room your tent is in.

Originally Posted by bombasticson

Nice tip i will turn on ceiling fan and I have windows open so i dont need to vent to another room

fresh is better. venting to the same space will raise your temps eventually even with windows open

Originally Posted by Metasynth

You have an 8 inch for exhaust and only 4 in for intake? No other passive intake? that is your problem right there...For an 8 inch exhaust, you're gonna need at LEAST 8 inches for the intake, preferably more. Do you notice a lot of negative pressure when your tent is sealed? That is because the 8 inch exhaust is trying to pull way more air that your intake can supply. You don't even really need an intake fan, and instead I would take that 4 inch booster fan, get an air cooled hood, and use the 4inch booster to exhaust the heat from the light. Then just open some passive intake holes to let fresh air in, but remember, your intake needs to be at LEAST as large as your exhaust, preferably larger, to effectively exchange the air in your tent in a timely manner and match the temps of the room your tent is in.

I can't get intake the same size as exhaust cause my tent only has 4 inch holes at bottom, but I think I will get and 8 inch valuline to exhaust and then have the other vents as passive intake and use my 8 inch booster to cool light cause my hood is 8inch air cooled, right now i just have ducting letting the heat escape to the top you think thats enough?

You need to get a cooltube. Use the 8inch for just the tube and light and the 4 inch to exhaust the tent it self.
make sure you vent the air from the lights as far away from the tent as you can

Booster fans suck. I learned this the hard way. Spend the money on a real fan and controller.