Google is your friend.....only thing about mylar is it is really cheap. It cost more to ship it than the actual product does, kinda like rockwool. Rockwool cost about $10 - $12 to buy and $15 to ship it....in other words buy the cheap stuff(soil, mylar, rockwool) at the local hydro shop, and buy the big stiff ( lights, ballast, reflectors, Co2 generators) online.