Zilla Reptile Pet Terrarium Water Filter Replacement Cartridge

Medium and large replacement filter cartridges for filters included with Zilla Deluxe Aquatic Turtle Kits. Also for use with Basking Platform Filters and Aquatic Reptile Internal Filters. Installs in seconds: rinse first and align cartridge bottom key slot for an accurate fit inside the filter Easy installation using the "FRONT" orientation tab For optimal performance, change approximately every 4 weeks For Zilla Internal Filter 40G and Large Basking Platform Filter 40G