Replacement Impellers for Sequence® Alpha Primer Series External Pumps Impeller for Pump:5000PRM18 The high concentration of bacteria

The high concentration of bacteria will help to remove the harmful ammonia and nitrite

Multiple skimmers can be plumbed to one pump

1 container treats 672

improves water quality and clarity

Using ultra sonic sound waves- no chemicals- fish safe

Replacement Impellers for Sequence® Alpha Primer Series External Pumps Impeller for Pump:5000PRM18 The high concentration of bacteriaReplacement Impellers for Sequence Alpha Primer Series External Pumps The impeller is circled in the product image. PLEASE NOTE: These Special Order items dropship from the manufacturer. For the most current ship lead time, please see the link "Current Manufacturer Lead Times" in the footer section at the bottom of our website. Alpha Primer Data Sheets Alpha Primer Data Sheets Service Manual