• Simply one of the best pond filter media options on the market
• Listing is for a range of Low to High densities to allow for multi-step filtration.
• Open and aerobic construction allows for water to flow through easily but can trap the toughest of debris, this also provides an unprecedented ease of cleaning
• Crush resistant and flexible, can easily be trimmed down to fit in filters and a wide variety of applications
• Also allows for colonization of beneficial bacteria to keep your ponds ecosystem strong with an incredible surface area!
• Each sheet measures 19" x 24" x 1.5" thick.