Marina i25 replacement Power Cartridge 2pk

- Marina i25 replacement Power Cartridge is made specifically to fit inside the Marina i25 internal filter.
- Its unique design allows the water to enter through the center of the cartridge.
- Split into 2 different chambers, the water 1st enters the zeolite chamber so toxic ammonia is removed.
- It then enters the activated carbon chamber so all pollutants and odors get removed.
- The water lastly enters the floss layer where debris gets trapped inside the cartridge.
- This unique flow of water results in a crystal clear water.
- For best results, replace every 4 weeks.