AquaMiracle Aquarium Filter Replacement Sponge, Fish Tank Filter Replacement Parts 3-Stage Filter Sponge hollandandbarrett They don’t come with any

They don’t come with any sort of instruction or measuring tape

Refill strips include EZ-strip peel-off backing for easy application and removal

99% Natural

Double-sealed for your protection

Premium Blade: This pill splitter adopts stainless steel double grinding blade

AquaMiracle Aquarium Filter Replacement Sponge, Fish Tank Filter Replacement Parts 3-Stage Filter Sponge hollandandbarrett They don’t come with anyAquaMiracle Aquarium Filter Replacement Sponge, Fish Tank Filter Replacement Parts Product Information COARSE SPONGE Filters out large size impurities such as food residue, fish excrements, plant leaves, etc. Recommend to replace once every 2 months. CARBONIZED SPONGE Removes odor, chlorine and fine particles. Recommend to replace once every month. FINE SPONGE Polishes water before it goes back to the tank. Recommend to replace once every 2 months.