Aqua One 3c Carbon Cartridge - Triple Pack - (three complete changes)

The Aqua One 3c Carbon and Polymer Wool Cartridge is a disposable filter cartridge for use in the Aqua One AquaStyle(AR) 620, AquaStyle(AR) 620T and Aqua One AquaMode 900 aquariums.

The C cartridges form the top layer of the trickle filter. Three packs of two cartridges are supplied (three large and three small for three full filter changes) and the cartridges should be removed and disgarded when blocked with fish waste and debris. This will usually be every four to six weeks. The Polymer 'wool' layer traps debris while the activated carbon removes odours and clarifies the water. An essential part of the Aqua One trickle-filter system.

We've tried substitutes and we've tried other filtration methods but nothing comes close the the original C cartridge from Aqua One.