Rain barrels connected from the bottom in a "daisy chain" fill and drain as one unit, and only req… | Rainwater harvesting, Rainwater harvesting system, Rain barrel
DIY Rain Barrel and Spigot (Daisy Chain Instructions)
Amazon.com : RAINPAL Rain Barrel Linking Kit (Upgraded Thicker Bulkhead Fittings and One 8 inch 3/4" I.D. hose) (RBL020) : Patio, Lawn & Garden