Water pump modification kit for Maxi-Jet pump models 400 and 600Enhances Maxi-Jet performance to improve aquarium water movementAn affordable way to increase Maxi-Jet flow rate up to 10 times Maxi-Jet modification kit easily improves water flow. Simply replace your Maxi-Jet powerhead/pump impeller with the Eco Mod to affordably increase flow rate up to 10 times normal output. Durable ABS constructed unit includes anti reverse-flow technology, arrives fully assembled, and attaches to most acrylic and glass aquariums. Use optional Eco Mod Support Clip to secure your Maxi-Jet and Eco Mod to your aquarium. Eco Mod is compatible with Maxi-Jet pump Models 400 and 600. To upgrade Max-Jet Model 1200, use the ECO Mod 1200. The Eco Mod 1200 features an enlarged impeller blade and will not function properly in Maxi-Jet pumps Model 400 and 600. Not recommended for wavemakers.Please click on "More Information" for directions.

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