humidity-cover seed starting hydroponics by Beth Saunders | Jun 30, 2020 | 0 comments Rockwool cubes in a black tray with a plastic cover. It looks a bit like a takeout container. Submit a Comment Cancel replyYour email address will not be published. Required fields are marked *Comment * Name * Email * Website Save my name, email, and website in this browser for the next time I comment. Δ