- Secret Jardin Darkroom Grow Tents are available in 11 different sizes, Totally lightproof when closed. Support bars can carry up to 30 Kg in weight. Easy and quick to assemble. Even the larger sizes can be assembled in minutes. Rustproof grow tent poles for long life. Secret Jardin 95% reflective inner mylar layer. Passive grow tent ventilation mesh for air intake. Easy mounting of carbon filter, duct and lighting. Plenty of pull cord circular vent holes. Washable material to remove odours. Straps included for easy mounting of carbon filter or extractor fan. Secret Jardin Grow tent carry case included for easy transportation or storage. Heavy duty zips!!!