Pondmaster® Hy-Drive Pump Replacement Impellers Model:21025 Works great as a rock

Works great as a rock cleaner

like hydrogen sulfide

to treat existing algae growth

5" Weir) 12" x 12

it is pumping more air than the air stone can put out)

Pondmaster® Hy-Drive Pump Replacement Impellers Model:21025 Works great as a rockThese replacement rotors fits Pondmaster Energy Saving Hy Drive pumps. These replacement impellers are available for all Pondmaster Energy Saving Hy Drive Pumps, Pondmaster Hy Drive Skimmer Pumps or Supreme Hy Drive Pumps. SKU UPC Code Compatible Pump 21005 025033210059 Pondmaster Hy Drive Pump 1900 (#20210) Supreme Hy Drive Pump 1900 (#40415) 21010 025033210103 Pondmaster Hy Drive Pump 2550 (#20215) Pondmaster Hy Drive Skimmer Pump 2550 (#20355)