Hello all, I am about to start a medical grow in a 4.5 x 4.5 x 7.5 tent with a 1000w light with a 6" ac hood.. Not sure how many cfms ill need as far as a fan goes to keep temps ok. Thanks
Bare minimum would be a 6", 435 cfm fan but bigger is always better with fans especially when dealing with 1000w lights which crank out the heat. Buy more fan than you need and put it on a speed controller.... This will let you dial in temps and reduce fan noise, and will still make your fan useful should you expand. Id go for a 550+ cfm fan and a speed controller (can be found for $30).
thanks for the advice i will put it to great use during my first medical adventure!! Much appreciated. I found a 6" 440 cfm inline fan with a 6" x 22" carbon filter for 159.99. Should I jump on it or could i find one cheaper? thanks again, your help is greatly appreciated.
I would go for a bigger fan for the reasons i mentioned......440 cfm would be bare minimum, you want to leave yourself wiggle room. As far as price goes, that is super cheap, but id buy the filter seperately......speaking from experience, cheap no-name filter dont work worth a damn. A good filter alone will run you $180-200, but its money well spent. Look for brand names like Can, Phresh, mountain air.....i just got a mountain air, and it works amazing, is refillable, and comes with a 3 year warrantee. .