will this help me save money?

[dreadydrug]

ok, i've got 2 boxes & 2 85m3h fans. but i need a fan speed controller, instead of getting 2 fan speed controllers could i just get one thats intake/exhaust but have both fans on outake (with passive intake). but to do this i'd have to make a hole through conecting the boxes so they're the same box, ones flowering box, the others veg so i would need to make a light trap. i'm planning on drilling two holes the same size as the fan, at the bottom of the box, making a light trap out of tubing. would this work? would i be able to keep the temperature of both boxes the same baring in mind that one is bigger than the other.

oh yeah the fan controller has a digital temperature setting.

[HARDDON]

The veg box will get more hot than the flower box when flower time is around.

There is nothing wrong with trying it out. Just keep both temps monitored.

[hotchi]

i dont know much, lol but u might wanna try switching the polarity on the exhaust fan or the other one that would not be in use,if all it does is spin the motor the otheer way