Exaust fan

I have 2 6 inch 250 cfm free air, inline duct fans. They work good just not with a filter, they work better in a duct even if no air is already moving. I would only use inline duct fans to cool a light like imma do

hi guys all i know is that i have a room that is 5'x7'x6 1/2' and the stanley blower works fantastic. if i open the door to the room i can feel the negative pressure as it is being open. i was a bit skeptical about the cfm ratings of it but after useing it i love it. i used it last year for 2 grows and 1 this year so far. for the 35 bucks i paid for it on ebay was well worth it and i will buy another when i can for a spare. i thought about getting a vortex inline and maybe i will someday but for now the stanley blower is doing its job. also for the 2nd grow i connect the blower to 2 bake-around cooltubes and still works great. i have tryed 1 of them duct booster fans in the same room and it was worthless.

I have two stationary 6 and 8 inch fan in my grow space. I have the fan first hit the wall then it hits the plants enough to where the plants barly move. But my temps are still 80-84 degrees. My plants are finally starting to look healthy thanks to all the help from you guys. I wish I new how to download some pics. on here to show you guys. Overall does anyone know just what the perfect temp is for the plants, espesially at first?

go to @air in water.com left there yesterday picked up a dehumiditier for 49$ went tho homedepo picked up a bathroom fan for 35$ wiating on my ligths to come on now in the flowering room every thing is wonderful 3x5x6foot

CO2 from a canister... up to 1500ppm

How can I get C0 2 in my box without a canister? And also besides the lights, 2 little fans to move air around, one fan for exhaust, what else would you recommend that I use or get to make this grow better?

https://www.rollitup.org/do-yourself/162265-co2-via-yeast-right-way.html

And you can also look around for a DIY carbon filter if you need one, I like this guide: https://www.rollitup.org/do-yourself/101248-best-diy-ez-walmart-carbon.html

Thanks I'm deffinitly gonna get one of these on my next grow. This is very cool and easy to do. Thanks