An economical way to accurately water 8 pots using one emitter. The Arrow Dripper stake has a secondary emitter that allows uniform flow rates even at varying tube lengths. Comes preassembled in 24"/36" tube lengths (4 of each tube length). 2 GPH from each emitter- 0.25 GPH per arrow dripper stake (1 in each pot) Recommended uses: Potted greenhouse crops, Poinsettias, geraniums, Nursery stock (up to 1 gallon), Mums (up to 8" x 5"). A 20 psi regulator required for proper operation.