Hydro Marijuana Growing – Better To Use A Reservoir Or Drip System? Administrator April 11, 2014 growing tips, In the News Hydro Marijuana Growing – Better To Use A Reservoir Or Drip System? (via http://organic-marihuana.com) By Johnny Green By Robert Bergman Both systems will work well in a marijuana garden. With the reservoir system, you’ll use horticultural clay pellets or pea-sized volcanic lava in plastic pots. The containers are put in a tray that contains a water… Leave a Reply Cancel ReplyYour email address will not be published.CommentName* Email* Website Save my name, email, and website in this browser for the next time I comment.