12 Pack Aquarium Filter Cartridges for Aqua-Tech 30-60/20-40 Gallon Fish Tank Power Filter Replacement, EZ-Change #3 Fish Filter Cartridge

Compatible with AQUA-Tech: It is match perfrect for AQUA-Tech 20-40 & 30-60 power filters (EZ-Change#3) & Marineland Penguin PRO Power Filters 275 375 & Original Penguin Power Filters 200 350 ( Rite-Size C).
Superior Filtration Performance: This filter Cartridge is made of cotton and activated carbon, It can filter and absorb 99% of the 𝒊𝒎𝒑𝒖𝒓𝒊𝒕𝒊𝒆𝒔 and fish waste in the aquarium,keeping the water clean and healthy and promoting healthy fish growth.
Replace Filter Cartridge Regularly: For the health of your fish and other lovely creatures, you need to change the aquarium cartridge every 2-4 weeks to keep the water healthy. It contains 12 pack aquarium filter cottons, which you can change every 2-4 weeks.