Large Green Solids Filtration Mat

  Product Highlights For the DIYer who wants to use mat filtration with good water flow. These mats are formulated to allow water to pass through but have small enough passages to trap large solid waste. About This Item Large Green Solids Filtration Mat: For the DIYer who wants to use mat filtration with good water flow. These mats are formulated to allow water to pass through but have small enough passages to trap large solid waste. 39.5″ x 24.5″ x 1.5″ plastic mats  Traps large fish waste solids for removal and cleaning with a water hose For the DIYer who wants to use mat filtration with good water flow.  These are large 39.5″ x 24.5″ x 1.5″ plastic mats that can be used as they are or cut into whatever smaller size the hobbyist prefers.   Traps large fish waste solids for removal and cleaning with a water hose. A good biofilter needs a lot of surface area with open spaces between for good aerated water flow. A high surface area is useless if the passageways are so small that wat