sealing the room

Anything i can use 2 seal off any cracks i might have in my grow room?Is any form of caulk ok?

I use duvatine (it's a black fabric used for lots of things, the film industry uses it on set to block out light) to block any light from coming through and if there are any other light/air leaks, I simply use tape. Gaff tape is black and the adhesive is just right for textures like walls and fabrics. Hope that helps!

I was told that using any kind of fabric in the grow area will allow mold and such to grow in the fibers. I would use panda w/black side out or reflective mylar

the wholr room is covered on poly,just thought i could use something to cover in the gaps between the poly and 2x4.thanks everyone

Silicon based caulking used for bathrooms and kitchens is mold resistant. For larger cracks I tend to use Great Stuff expanding foam, and so far no mold issues with it but its not more ghetto looking the a good caulking job.

thanks,just trying to make sure all air is going threw carbon filter

great stuff expand o foam and liquid nails caulk with a finger is perfect for everything!!!

i thought a dark colored exterior door/window sealer caulk would do the job well... easy to work (a little easier to deal with that liquid nails... and if the LN is too thin light leaks through a bit... experience talking... if light is not an issue it's good though)... also the exterior caulk is made to handle the extremes and you can get a very dark brown that is completely opaque ... just my 2 cents

EDIT: ditto on great stuff for big holes

thank you !!!