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The EV-400 is a beast of a skimmer, and is well-suited for heavily stocked marine tanks. The footprint is the same as the EV-240, but this skimmer has a taller mixing chamber and a larger foam tower, which makes for better contact time. If you have the room for this monster, you will not be disappointed.


- SMC precision valve for air flow control
- John Guest Speedfit connection
- Twist-Loc collection cup with EPDM gaskets
- Raised gate valve for easy sump installation


- 32" tall
- 6-3/4" x 10-3/4" footprint (not including pump)
- 1" hose barb water input
- 1-1/2" gate valve output
- 3/4" collection cup drain
- 3/8" threaded air inlet
- 1/4" JG fitting
- Gate valve exit is 9-1/2" high

Recommended Pump

- Mag Drive 18
- Gen-X Mak 4
- Iwaki 55 RLT

User Manual & Instructions