The Marina i-series is a compact yet powerful internal filter for use with any goldfish or tropical tank up to 100 liters (25 US gallons). Complete 3-stage filtration (mechanical, chemical, biological) is provided thanks to its uniquely designed Power Cartridge (included).
The outside of the power cartridge features polyester foam to trap fine particles; while the inside chambers contain carbon to remove pollutants and odors; and zeolite to eliminate toxic ammonia for a cleaner, healthier aquarium environment and crystal clear water. The Bio-Screen, with its large surface area, is designed to promote the growth of friendly bacteria.
Key Features :

Enhances aquarium water quality
Bottom positioned motor for quiet operation
Waterfall spout for continuous oxygenation
Effective 3 stage Filtration (mechanical, chemical, biological)
Bio Screen provides large surface area for growth of friendly bacteria
Easy replacement of Power Cartridge
Compact size and energy efficient

Additional information