Would love some input into a Venting of my box!

[JayJayNlp]

I got a 62" 36" 20" box I run a 250 and my temps are 84-88 I recently went back to my 150 watt because of that and would need to buy a inline fan just dont know what CFM would be right?? Currentyl I am using a 6" inline booster fan as exhaust maybe just get another one??

 

[Cloudblood]

Place another 240 cfm boost fan ($ 24.95 at most box stores....and buy a cheap but heavy duty extension cord and cut the socket end rig the fan to plug in..only two wires you can't fail really) pulling fresh air in down low and have the exhaust yanking the heat off the top....that way the heat will never settle into the growth and the fresh air is forced to rise through vegetation.