Double Layer Biological Foam Spool Filtration
Achieving optimal bacteria growth requires slowing the water flow and providing an ideal surface area for beneficial bacteria. Our High-Density Foam Spools have been proven filtration systems for over 40 years. 

It's simple yet incredibly effective.
Experience optimal biological filtration with these ideal conditions:

  • Large Surface Area To allow Bacteria to attach itself
  • Slow Contact time to allow bacteria to thrive and multiply
  • Enough Oxygen in the water to support Bacteria
  • Optimum Temperature to keep Bacteria Alive
 Benefits of our Foam Filter Spool Filtration Systems:
  • High density spiral foam spool allows rapid bacteria colonization
  • Provides large surface area for nitrifying bacteria
  • Filtration Spool features spiraled dual density construction which increases contact time
  • Correct contact time with filtration spool ensures efficient decomposition of ammonia and nitrite
  • Open filter design provides more oxygen for nitrification
  • Filtration Spool traps large quantities of detritus and particulate matter
  • No leaks, noise and other potential problems like with external filters
  • Low Maintenance - Squeeze the spool in aquarium-safe water once every 3 to 6 months depending on the bacteria load of the aquarium
Nitrogen Cycle Fish produce ammonia as a by-product of respiration and from food digestion. Bacteria like Nitrosomonas consume ammonia, breaking it down into less toxic nitrates. Biological filtration is crucial for water quality.