Aqua One 104c Carbon Cartridge For Ecostyle 32 and 37. Twin Pack – four cartridges

Two packs (four cartridges) of 104c Carbon and polymer wool filter cartridges to fit the Ecostyle 32 and 37 aquariums. These super value packs also include the 104s sponge so no need to buy it separately. Change ever month to six weeks to maintain great, crystal clear, odour free water. It costs a few pence per week to change the filter media on an ongoing basis and will will pay you back again and again in terms of fish health and longevity.