Pondmaster AP-100 Air Pump Kit is a Pondmaster-branded product in the ownkoi catalog. Diaphragm air pump kit from Pondmaster with two airstones and 25 feet of airline tubing. 4 LPM rated output. Specifications and pricing reflect the manufacturer-published or retailer-published data at the most recent catalog refresh. Verify the live listing on the source retailer page before purchase.