CPR CS90 Continuous Siphon Overflow Prefilter Box 600 GPH

• 600 GPH max flow
• Tanks up to 125 gallons
• Outflow size: 1 inch bulkhead
• Depth behind tank: 4 3/8 inch
• Width: 7 1/4 inch

CPR Aquatics Continuous Siphon Overflow Prefilter CS90
If your aquarium does not have built-in overflow, CPR Continuous Siphon Overflows/Prefilters are the best means for getting water from an aquarium to a filter system without expensive modifications to the tank. They quietly skim up to six times more water than units with tubes.

The advantages of CPR Continuous Siphon Overflows/Prefilters include: 

• Adjustable water level allows you to easily change the level in your tank. 
• Black top reduces algae growth.
• Plastic screen to prevent fish loss. 
• Quiet operation.
• CS Overflows now feature a grated inlet instead of the fish screen previously included.

Use with optional Aqua Lifter suction pump to automatically create a siphon and prevent air from causing a siphon break. (See Below)