pump up the volume the dual diaphragm air ... pump is a powerful pump designed specifically for use in ... hydroponics systems this quiet pump moves up to 340 gallons per hour and ... also available is the dual diaphragm rebuild kit giving you the option of fixing the ... pump rather than replacing the entire unit ... the rebuild kit includes two replacement diaphragms ... a cinch ddap500 dual diaphragm air pump 69.95 ddap501 dual diaphragm rebuild ... and controls ph imbalance this kit pumps air into your solution to raise oxygen ... levels it includes an air pump 12 air stone and 25 of blue plastic ... is a great way to apply concentrated water-soluble fertilizers fungicides and insecticides ... ecosub 410 siphon mixer 13.95 serious pumps for serious hydro systems ecosub and ...