• Specifially desgined for Fluval 306/307 & 406/407 filters
  • Effective at reducing and controlling toxic ammonia spikes
  • Effectively traps floating particles for clear water (debris, excess food and waste)
  • Ideal for new and heavily stocked aquariums
  • Use after medicating fish
  • Custom fit for 07 and 06 series filter to increase filtration efficiency
  • For best results, replace monthly or as required after testing water
  • Convenient 6-pack format
  • For use in freshwater and saltwater aquariums