hk53 - you stated "pump came with a small metal porous piece about one inch for the intake". This part is supplied by GAST and NOT intended for an intake filter. It is supposed to be used as a muffler when the pump is used for vacuum application. The company highly recomends that it NOT be used as an intake filter. Using it as an intake filter may void the warranty.


aka Pond Doctor & Dr. Perca Read Pond Boss Magazine -
America's Journal of Pond Management