One used Fluval Circulation WP1500 pump.

This Fluval Circulation WP1500 Pump is suitable for the Fluval Sea EVO Aquarium Kit – 52 L/13.5 US gal (10531), the Fluval FLEX Aquarium Kit – 57 L/15 US gal (15006), and the newer Fluval SPEC 16 Gallon aquarium.