Agrowtek's Dual dosing pump offers two independent dosing pumps in one economical, easy to install package. Simply place the suction end of each pump tube into any size nutrient or pH stock tank (may be located above or below the pump) and route the outlet of the pump to your reservoir, mixing tank or even pressurized lines up to 30psi! Features Two independent pumps Built-in relays (connect directly to GC-Pro/XL) Flow Rate: 50mL/min per pump Power: 15Vdc/120VAC wall adapter Powder coated sheet metal enclosure 1 Year Warranty, Made in USA