*digs up old post*
https://www.rollitup.org/grow-room-design-setup/19369-using-mirrors.html
Short and simple answer: Mylar is the best solution.
they dont produce the type of light that you want to grow with anyways. yet another case of someone setting the house on fire to b eing uninformed. thank god for rollitup. may we continue preventing future cases of this.LOL my firend used foil once and a 200 w heat lamp and he came home and all his shit was on fire...jus dont use a heat lamp!!![]()