Red Sea ocean clear model 340 canister filter for freshwater and marine tanks up to 150 gallons. Provides the highest usable wetted surface area for nitrifying bacteria to eliminate toxic ammonia. Consists of a durable 40-square feet filter cartridge with a core of Polystrand bio-media. Includes 40-square feet pleated micron cartridge and 50-square feet polystrand bio-core for biological filtration in the center core. Requires Flow rates between 800-1600 GPH.
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