Clear Water CW-50 External Algae Scrubber

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  • Regular price $ 614.99
  • 1 available


Max Recommended Tank Size - Up to 100 gallons

Dimensions - 12 1/4" L x 7" W x 7 1/2" H

Screen Dimensions - 5 1/2" x 6"

Recommended Flow Rate - 150 GPH

Input Barb Size - 1/2"

Main Drain Bulkhead - 1/2"

Emergency Drain Bulkhead - 1/2"

Power Consumption - 20W @ 120VAC

CWT 25 Sump

CWT sumps are ready for the latest and greatest filtration tech, featuring rails designed to accept a range of waterfall-style algae scrubbers and a flexible-use media section built to accomodate standard filter socks or the Klir 4" automatic filter roller. These high-quality sumps are MADE IN THE USA using ¼" cell cast acrylic. The side and bottom panels are clear and opaque black acrylic is used for the top and interior baffles which creates a clean, contemporary look that compliments any color scheme.


The included bracket and PVC rail system located in the center chamber supports compatible Clear Water Algae Scrubbers above the water level while still allowing enough space for a protein skimmer or additional filtration equipment.


The intake or drain chamber contains a 1" slip bulkhead and a flexible-use media section and comes standard with a removable Filter Sock Tray.  The media section of the CWT 25S Sump is compatible with the Clarisea SK-3000 Automatic Filter System (requires conversion kit for the Clarisea SK series, available soon from CWT Aquatics).  The standard tray is compatible with standard 4" filter socks and the Klir Di-4 Fleece Filter Roller.


A 1" slip bulkhead located on the return chamber is aligned to fit directly onto the EcoTech Marine Vectra S2 DC Return Pump but will also work with a wide range of additional pumps.


All models feature a probe holder with 4 ports, JG fittings for dosing lines located in the return pump chamber, adjustable water level in the center chamber, black colored lids to prevent salt creep and bulkheads for both the drain and return pump connections.


*With scrubber installed, there is a remaining footprint of 7" x 7" for a protein skimmer or additional equipment of your choice. When using a protein skimmer alongside an algae scrubber, we recommend downsizing your skimmer because of the reduced nutrient levels as a result of the scrubber.

Sump Specifications

  • Overall Dimensions: 20" x 18" x 16"
  • Intake/Drain Chamber Dimensions: 5" x 8.5" x 16"
  • Center Chamber Dimensions: 14.75" wide along front half and 9.6" wide along the back half
  • Return Chamber Dimensions: 4.5" x 17.5" x 16"
  • Bubble Trap Dimensions: 2" x 8"
  • Drain Bulkhead: 1" Slip x Slip
  • Return Bulkhead: 1" Slip x Slip
  • Filter Sock Holder: 4" Diameter
  • Lid/Splash Guard(s): 4.5" x 4.5" (return) and 4" x 12.5" (drain)
  • Adjustable Water Level: 6" - 10" Reversible Weir (Flat or Toothed)
  • Probe Holders: 4 (3x 1/2" diameter and 1x 3/4" diameter)
  • Cable Grommet: 1.5"