Not recommended. Some will say a booster fan like that is ok, I will not. They're not made to pull through resistance like a carbon filter. You need something like this: https://smile.amazon.com/iPower-GLFANXINL4FILT4MD8C-Exhausting-Pre-Filter-Reversible/dp/B00DIH7TL0/ref=sr_1_2?ie=UTF8&qid=1483920439&sr=8-2&keywords=carbon%2Bfilter%2Bfan%2Bcombo&th=1
There's better deals out there but you want a beefier fan for growing than an inline.
Any idea of what a half decent extraction system might be? maybe an amazon link if im super duper lucky? I am still in veg so I'm not (yet) too worried about smell, but the temps have been hard to control recently, reaching the upper 80*'s if I leave the vents and mesh windows shut. 3 300w Mars Hydro for lighting.
100×100×180cm (38x39x70in) Tent
Vents: 2 x 3", 4 x 6", 2 x 8"
Should I really drop the $$ for something like this: https://www.amazon.com/iPower-GLFILT4M-Australia-Reversible-Pre-filter/dp/B00DIH7TL0?th=1
With the tents vent sizes, would 4 inch not be an option? looks like my vent sizes jump from 3inch to 6inch? Any ideas or opinions would be great :)