a cry for help.........

You will have all kinds of trouble with your grow if you dont address the venting. Ill ask again, what do you plan to do about the heat?

in the flowering chamber i will use the other bath fan for intake....hook up a 500 cfm inline fan straight to a cool tube to vent light i'm hoping that 500 cfm's will be enough to vent light and flowering space if u or any one else think i need more cfm's i'm going to go get it right away i will also have a fan for air circulation also inside the chamber

which i have a question ok 4.5x4.5x7 would approximately be about 140 cubic feet (I think that's right)
the question is what would be the amount of cfm's needed to have good airflow
I seen the formula somewhere I just forgot it....
if anyone has this formula please let me know....

no formula... just get a fan that can circulate the air once every few mins. since you have a strong fan hooked up to that hps. your room shouldent get too hot. so a fan thats 150-200 cfm should do the job well

i was told by bghydro that if i use a 4x4 space for that hps light i need at least 400cfm's to keep the room temps down.....have u or anybody else seen a 1000w cooled with 200cfm's ...if so that will make it a whole lot easier on me purchasing a fan and with electricity

if anybody has any info on cfm's or cooling a 1000w light please feel free to jump in...

i was talking about the room... not the light. and i dont know anything about cooling a 1000 watt hps. i suggest checking out the live chat feature. a few good growers chill in there

thanks again man