Poly Filter - 4 x 8 Inch Refugium Lighting Clean rimless presentation: The open-top

Clean rimless presentation: The open-top design keeps the focus on the reef and gives the aquarium a modern display-tank look

or aquarium-safe attachment methods

Freshwater reservoir: Sold separately

and other high-flow filtration spaces

and pH re-equilibration

Poly Filter - 4 x 8 Inch Refugium Lighting Clean rimless presentation: The open-topPoly Filter 4 x 8 Inch Poly Filter 4 x 8 Inch is a specialty chemical filtration pad from Poly Bio Marine for freshwater and saltwater aquariums, designed to remove a wide range of dissolved contaminants from aquarium water. Poly Filter Chemical Filtration Pad Poly Filter is made from a patented material bonded to a synthetic matrix and is used when aquarists need more than basic mechanical filtration. It can help remove excess organics, medications