Grow Room in progress

[tinytoon]

room is being built inside basement so intake air would be basement air

[disrupt86]

thas fine,thats how mine is.but u dont want your lights exhaust being recirculating back into the light system,

[tinytoon]

during warm weather it will be exhausted right to the great outdoors but fall/winter it will go to other side of basement (basement is basically split in half by a wall and doorway and room being built in 1 half) and assist with winter heating costs :thumbsup: I also see that a 6" vortex type fan ( can fan type) moves right around 400 cfm's so that is now on the list along with 2 600w lamps to start.

[tinytoon]

ok for exchanging air in the room itself I was planning on atleast 1 4" passive intake hole in each wall except the wall that will have an exhaust blower mounted up by ceiling. he intakes will be made out of pvc plastic elbows to keep light from going in and will be putting pantyhose over the pvc opening to deter bugs from trying to enter. cfm size I am still debating, room around 12 x 7 x 6 1/2.

[disrupt86]

700 cfm and up,its better to have to much exhaust than not enough.espescially with a passive system,that way u dont get stuck with a fan that doesnt work and the fan u could have bought in the first place for a little extra.

[tinytoon]

cool :thumbsup:
makes sense thats why I asking all this crap before hand lol

[disrupt86]

no worries my friend,im using a vortex 8 inch 747cfm fan,got it a a couple months back,with out the filter attached, this thing pulls suction so hard. i had to cover and re tape all my old duct holes because the suction pulled off all of the old stuff,im not sure if noise is a issue but one thing to consider is the bigger the cfm the louder the fan is going to be,if your going to a hydro store have the guy plug it in and test em out.your room is bigger than mine. i would ask to see a 10 inch or maybe even a 12.

[tinytoon]

well the sound test might be an issue as the closest hydro shop is about 80 miles away but wth I guess i'll have to plan a trip down. Noise isnt a huge issue but I really dont want it to sound like a friggin jet trying to take off lol

[MerryPrankstr]

Better to have a large diameter/volume fan and slow it down ( makes it much quieter) than one matched to max out at needed cfm...

M.P.

[McDanger]

if you are pulling room air thru the lights to outside you will have smell to deal with. Unless you pull air from outside the room ducted thru the lights and back out, and use a different fan for room exhaust with a filter on it for smell.