Best Biological Filters

Fluval Foam Filter Block A226 - For 404/405/406 12-Pack - Retail OEM

  • Biological and mechanical aquarium filtration.
  • Designed specifically for Fluval 404/405/406 canister filters.
  • This media is suitable for use in both freshwater and saltwater aquariums.
  • Traps waste and debris from your fish tank's water and maximizes biological filtration while maintaining even flow.
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Coralvue Klir Fleece Filter 7' Di-7

  • REPLACEMENT FILTER CARTRIDGE: Pack of 6 fits Marineland Penguin PRO Power Filters 275 and 375.
  • also fits original Penguin Power Filters 200 and 350..
  • EASY TO INSTALL: Pre-assembled cartridges slide easily into place, providing mechanical and chemical filtration and making replacement fast, dry and effortless..
  • THREE-STAGE FILTRATION: Mechanically filters water through a pad of double-thick poly fiber..
  • Chemically filtered through Black Diamond Premium Activated Carbon..
  • BIO-Wheel technology delivers wet/dry biological filtration for nitrifying bacteria growth..
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Marineland Rite-Size Cartridge C, 6-Pack

  • REPLACEMENT FILTER CARTRIDGE: Pack of 6 fits Marineland Penguin PRO Power Filters 275 and 375.
  • also fits original Penguin Power Filters 200 and 350..
  • EASY TO INSTALL: Pre-assembled cartridges slide easily into place, providing mechanical and chemical filtration and making replacement fast, dry and effortless..
  • THREE-STAGE FILTRATION: Mechanically filters water through a pad of double-thick poly fiber..
  • Chemically filtered through Black Diamond Premium Activated Carbon..
  • BIO-Wheel technology delivers wet/dry biological filtration for nitrifying bacteria growth..
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Aqua-Tech Ultra Quiet Power Filter, For Aquariums 20-40 Gallons

  • INCLUDES CARTRIDGE: The molded ribbed back maximizes contact with water – includes premium activated carbon..
  • BIOLOGICAL FILTRATION: Bio-Foam biological filtration removes toxic ammonia and nitrites on contact..
  • QUIET: Decoupled motor with dampeners reduces noise to below 40 dB..
  • POWERFUL: Impeller and motor assembly designed for efficient power usage filters 20-to 40-gallon aquariums 5 times per hour..
  • SLEEK DESIGN: Designed to fit standard aquarium hoods and canopies, the Aqua-Tech Ultra Quiet Power Filter makes aquatic filtration easy..
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Aqua-Tech Ultra Quiet Power Filter, For Aquariums 10-20 Gallons

  • Includes cartridge: the molded ribbed back maximizes contact with water – includes premium activated carbon..
  • Biological filtration: bio-foam biological filtration removes toxic ammonia and nitrites on contact..
  • Quiet: decoupled motor with dampeners reduces noise to below 40 db..
  • Powerful: impeller and motor assembly designed for efficient power usage filters 10- to 20-gallon aquariums 5 times per hour..
  • Sleek design: designed to fit standard aquarium hoods and canopies, the aqua-tech ultra quiet power filter makes aquatic filtration easy..
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DEPEPE 10pcs Aquarium Filter Media Bags with Zipper for Activated Carbon, Biospheres, Ceramic Rings, etc.

  • Zipper Material: Plastic, Corrosion Resistant.
  • Package contains: 5 white filter bags + 5 black filter bags.
  • Mesh hole diameter: approx. 1mm, suitable for respiratory biological rings, activated carbon, volcanic rocks, coral sands, ceramic rings, etc. Not applicable for finer particles..
  • Filter bags are good for various filters, including fresh water tanks, tank filters, power filters, etc..
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MarineLand ML Penguin PRO 175 Filter 10/1 CT, 78179

  • With bio-wheel technology: bio-wheel technology provides wet/dry biological filtration..
  • Multi-stage filtration: delivers mechanical, chemical and biological Aquarium filtration to maintain a clean aquatic environment..
  • Compatibility: use with Marine Land rite-size B filter cartridge..
  • Six sizes: 100 (for up to 10 gallons), 125 (for up to 20 gallons), 175 (for up to 30 gallons), 275 (for up to 50 gallons), 375 (for up to 75 gallons), 450 (for up to 90 gallons)..
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Marineland Rite-Size Cartridge Refills (6-Pack)

  • REPLACEMENT FILTER CARTRIDGE: Pack of 4 cartridges fits Marineland Emperor PRO Power Filter 450.
  • also fits original Emperor Power Filters 280 and 400..
  • EASY TO INSTALL: Pre-assembled cartridges slide easily into place, providing mechanical and chemical filtration and making replacement fast, dry and effortless..
  • THREE-STAGE FILTRATION: Mechanically filters water through a pad of double-thick poly fiber..
  • CHEMICALLY filtered through Black Diamond Premium Activated Carbon..
  • BIO-Wheel technology delivers wet/dry biological filtration for nitrifying bacteria growth..
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Aquapapa Filter Media Bags 50 1″ Bio Sponge Ball + 1 lb Ceramic Rings for Aquarium Fish Tank Pond Canister Filter (Ship from CA USA)

  • Ready to use media bags, convenient use for all types of filters. Good to use in both fresh and saltwater tank..
  • Ceramic rings and bio balls with inside sponge offer large surface area for efficient biological filtration. Hollow shape rings enhances biological filtration capacity allowing water flow through and less likely to get clogged..
  • Bio ball size: 1″ in diameter. Mesh bag size: 8″x 5.5″. The zipper of the mesh bag is plastic..
  • Package includes: 1 bag of bio ceramic rings and 1 bag of bio sponge balls..
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