my next room is 12.5 x12.5 x 9 foot ceilings---156 square feet 1406 cubic feet

i see the math u are doing still a little confusing but i havent really done math like that in 10 damn years:stoned:


1406 / 5 = 281 (I'm rounding everything up) = air exchanged every 5 minutes
281* 1.5 = 421 = one 90 degree duct elbow
281 * 1.3 =365 = resistance of carbon filter
+ 44 = 10 feet of duct
+ 5 = +/- 10% for error

Add it up: 281 + 421 +365 + 44 + 5 = 1116 CFM


if thats correct then i should just buy 2 One for over 1200 cfm and maybe keep the 8 in valuline 745 cfm running 2 ...Please correct me if i am wong

THOSE CEILING HEIGHTS may be between 7 1/2 to 9 i cant remember off the top of my head
johnnyblaze326 Reviewed by johnnyblaze326 on . confidence booster 1st grow all input welcome well i did start this post in outdoor which was supposed to be but things have changed... These seeds are good bad seed that had me drooling for hours! well this is my very 1st grow EVER well i started on sept 24 .. I put 12 good bagseeds in generic potting soil in 32 oz cups with alot of holes since i didnt put perlite in soil April 28 11/12 popped outta the soil waiting on number 12 but not to worried my magic number is 10...I started to use cfl lights for this grow 6 6500k Rating: 5