BLACK and WHITE Mylar reflective sheeting film roll hydroponics grow kit 2 x 30m : Amazon.co.uk: Garden
Black And White Film 2×3m Hydroponics Poly Film Highly Reflective, Waterproof Plastic Sheeting, Growing Bed Liner, Reservoir Covering In Growing Room, Greenhouse Syst(Size:4×4m(13.1x13.1ft),Color:12S) : Amazon.co.uk: Garden