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  • New for 2024
  • Air Pumps and Accessories
  • Aquatic Plant Care
  • Artificial Rocks
  • Aquariums
  • Bottom Drains
  • Cleaning Equipment
  • Filter Media and Bags
  • Filter Systems
  • Fire Pits
  • Fish Food and Feeders
  • Fish Health
  • Fish Holding and Measuring Tanks
  • Fish Nets and Cages
  • Fountains and Basins
  • Fountains and Nozzles
  • Heaters and De-Icers
  • Lake Management
  • Landscape Lighting
  • Plumbing and Auto-Fills
  • Pond Decorations
  • Pondless Kits and Parts
  • Pond Kits
  • Pond Lighting and Electronics
  • Pond Liner and Sealants
  • Pond Netting & Stakes
  • Predator and Pest Control
  • Pump Accessories
  • Pumps - External
  • Pumps - Submersible
  • Seasonal Products
  • Skimmers for Ponds
  • Ultraviolet Clarifiers
  • Water Testing
  • Water Treatments
  • Waterfall Filters
  • Waterfall Spillways and Basins
  • Gifts and Collectibles
  • Shop All

    • Shop by Brand

  • Aquascape
  • EasyPro
  • Atlantic
  • Matala
  • Blue Thumb
  • Lifegard Aquatics
  • Alliance
  • Anjon
  • Outdoor Water Solutions
  • Microbe-Lift
  • View all Brands

    • Aquaculture System Technologies

    Aquaculture Systems Technologies, (AST) product line features ten propeller-washed bead filter models with bead capacities ranging from 3 ft3 to 100 ft3 and seven bubble-washed bead filter models with bead capacities from 1/4 ft3 to 10 ft3. These filters are often referred to as bioclarifiers for their ability to perform both biological and mechanical filtration in a single unit. Bead filters operate very much like submerged rock beds or undergravel filters, with the added advantage of easy cleaning.

    Bead filters are generally classified as expandable granular biofilters and are distinguished by the use of buoyant granular media. The packed bed of plastic beads, through which water from the tank passes, captures solid waste (100% of particles >50 microns and 48% of particles 10-50 microns). Simultaneously the beads provide 400 ft2 / ft3 of surface area for the attachment of nitrifying bacteria, which metabolize dissolved nitrogenous waste.

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