on each cartridge, at the top there is a tab that can be opened. You can reuse a plastic container by emptying the old dirty charcoal and filling it with new charcoal. Buy bulk charcoal online or at any pet store. much cheaper than buying these cartridges new. So far I have not had to use the second cartridge in the pack as the first is still in use after several replacements.
Aquael Fan Filter Mikro Plus
35 Review
Sink filter Prio New Water Start Osmos OU380 white
79 Review
Humidifier / air purifier "Fanline Aqua VE400" with an ionizer, with a capacity of 410 gr/h
44 Review
πΏ Enhance Your Freshwater Fish Tank with Greenpro Java Fern on Driftwood Live Aquarium Plants
27 Review
Jasonwell Magnetic Aquarium Fish Tank Glass Algae Cleaner - Floating Brush (L Size)
37 Review
π U-BCOO Aquarium Gravel Cleaner Fish Tank: Manual Siphon for Efficient Filter Gravel Cleaning and Water Change in Tanks
22 Review
Efficient 2-In-1 Magnetic Fish Tank Cleaner With Non-Slip Design And Scratch-Free Blades
37 Review
Greenpro Micranthemum Monte Carlo: Live Large Pearl Grass Aquatic Plant In Tissue Culture Cup For Freshwater Fish Tanks And Aquariums
49 Review