Mylar.... Is it worth the investment?

I've got a grow room. It started out as a small closet grow and before I knew it I built a sealed room with co2, 4k watts of hps, a seperate ac, etc. Etc.

I'm now considering putting up Mylar on the walls and I'm curious as to wether or not it's worth the money.

What do you guys think?

As of right now the room is painted white with black plastic covering the entire floor. Will the Mylar increase yields due to the increased reflectivity?

no not anything substantial. White walls are fine, mylar being the most reflective surface out there would not make much if any difference IMO. Id spend the money on some liquid light foliar spray, if you wanna see some stupid fast, lush, growth. Hell of alot better than upgrading reflective materials

~ BCbuddy