Just suffer the trouble and do the attic, I say. Remember, birds nest in chimneys if they can find a way in. I'd hate to see you finding a dead bird that fell into your duct. What a stink that would make!
Good Luck with your grow.
ProGroWannabe Reviewed by ProGroWannabe on . regular or reverse lighting schedule??? right guys what u think would be the better option:- have the lights on during the day so it harder to spot the heat and any light that might sneak out from the window or have the lights on during the night so it is not in use during the times people are around in my gaff.also to keep temps down since the heat will be generated during the night time it is to be in a 4 by 4 metre double room with one 600w light,not sure about how many 1 metre square hydro tanks to use yet... what Rating: 5