Mechanical filtration pads for FilStar canister filtersRemove coarse debris and solid waste for clear, aquarium waterFiltration pads help maintain efficient canister filter performanceFilStar 20 Pores Per Inch Foam Coarse foam pads filter large particles like food and plant fragments. Special open-cell design for free water flow. XP1 requires 1 foam, XP2, XP3, and XP4 require 2 foams.FilStar 30 Pores Per Inch Foam Fine foam pads filter fish waste and other fine particles. Special open-cell design for free water flow. XP1 requires 1 foam, XP2 and XP3 require 2 foams, and XP4 requires 6 foams.FilStar Micro-Filtration Pads Remove extremely fine waste, sediment and particles from water, making it crystal clear. Change pad at least once a month.FilStar Progressive Micro-Filtration Pads Innovative mechanical filtration pad features two visible layers that progress from coarse to fine. Efficiently traps coarse and fine waste particles and resists clogging to maintain even water flow. Place in last position in filter. Change pad at least once a month.

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