The Laguna PowerFlo Max Underwater Filter Foam Media is specifically designed for use inside the Laguna PowerFlo Max Biological Underwater Filter. The coarse foam material performs mechanical filtration, capturing dirt and debris as water flows through it. The foam is also porous to allow some degree of biological filtration.
Laguna PowerFlo Foam Insert Mechanical Filter Media (Mfg# PT 550) measures approximately 10-1/2" x 5". Replace yearly to enjoy the best performance from your Laguna PowerFlo Max Underwater Pond Filter.
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Please click on "More Information" for directions for use.