im going with pj just do it if you believe it will work out, go ahead and try it. the best way to learn is failure. 5 years and im still learning shit.
exactly what i thought. and im not head bent on using it. people use it alot, all i want to know is if its truely BAD like some people say. i know it might not be as reflective as mylar or white paint but it seems to help. when i didnt have it up my box was cold even with the lights close now that its up, seems to bring heat up perfect. and im using 3 23w cfls in a 3'H 1.5'W 2'D box.i just dont want to have to tear everything out of my box and have to paint it and leave my plants out for awhile or anything like that. if i dont have to im not going to but if it really is BAD like some say i will go to the extreme
id say use white paint and a strip of aluminum foil on the roof of your grow room, could up the temp if it really is that low. its summer now though, plants grow fine in temps as low as 50-60 but will be trying to defend itself, they will grow but not as fast as they would around 70, but there will be growth. i dont recommend it with an hid though.
i would use plastic wrap, aluminum foil still causes hot spots. and pj i agree, white piece of paper would be better.
