These 30-60 micron mechanical filtration pads are designed specifically for the Fluval Multi-Stage Canister Filters. Extra-thick, micro-fine polyester pads trap micro particles and debris for clean aquarium water. Perfect to help clear cloudy water. Also great for use after aquarium maintenance. For optimal use, place in last chamber, after BIOMAX. Two sizes, each specifically cut to fit your specific Fluval filter. 3-pk is designed for 104/105/106 & 204/205/206 canister filters and each measures 1" thick x 2-3/4" wide x 5-3/4" long. For the divided chamber-style of the 304/305/306 & 404/405/406 canister filter choose the 6-pk; each pad measures 1-1/2" thick x 2-7/8" wide x 4-3/8" long. For fresh or saltwater aquariums. Not for continuous use.
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