These replacement filter cartridges are designed for the Zilla turtle kit filter. They come with 25% more activated carbon, which effectively purifies the water. The dense - floss cartridge can trap more fine debris. It's a medium - sized 3 - pack, ensuring long - term use.

To use these Zilla replacement filter cartridges, simply remove the old cartridge from your Zilla turtle kit filter and insert the new one. Make sure it fits snugly. As for the frequency of replacement, it's recommended to change the cartridge every few weeks depending on the water quality and the number of turtles in your tank. When handling the cartridges, be gentle to avoid damaging the dense - floss part. Store the extra cartridges in a dry place away from direct sunlight. This will help maintain the quality of the activated carbon. Regularly check the filter and replace the cartridges as needed to keep your turtle's water clean and healthy.