Eshopps Refugium R-200, 125-225 gal, 2nd Generation.

Refugiums are one of the most efficient ways of filtration in saltwater aquaria today.
Not only is it a natural way to filter your display tank but it is a sanctuary for micro-organisms to flourish and reproduce.
The Macro-algae used in the refugium will utilize nitrates and phosphates from your water column. These algaes uses these nutrients to grow and thrive.

Eshopps R-200 Specifications:
High quality acrylic refugium filter with unequaled value
First Compartment is 8.5" x 13.5" to fit in-sump protein skimmers.
* Refugium Compartment: 13.5" x 13.5"
* Return Pump Compartment: 5.5" x 13.5"
2x1" threaded inlets with prefilter bag
Rated for tanks up to 225 gallons
Dimensions: 30L x 14"W x 16"H