Marina i25 Internal Filter

i25 Internal Filter

By Marina

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Description & Features+

The Marina i25 is a compact yet powerful internal filter for use with Marina goldfish aquariums or any other goldfish or tropical tank up to 25 liters (6.6 US gallons).
It effectively filters water through 3 stages of filtration, providing a cleaner and healthier aquarium environment.
The filter's uniquely designed Power Cartridge (included) enables the water to enter the center of the cartridge for an effective mechanical, chemical and biological filtration process and exit from the polyester foam layer leaving all trapped debris inside the cartridge, ensuring your aquarium water is crystal clear.
•Enhances aquarium water quality
•Ideal for goldfish or tropical tanks up to 25 L (6.6 US gal.)
•Bottom positioned motor for quiet operation
•Waterfall spout for continuous oxygenation
•Effective 3 stage Filtration (mechanical, biological, and chemical)
•Easy replacement of Power Cartridge
•Compact size and energy efficient


Assembled Height
7.9 in
Assembled Length
3.1 in
Assembled Weight
.8 lb
Assembled Width
3.1 in
Product Identifiers
Walmart Item #
Model #

From the Manufacturer +

Ratings & Reviews+

Marina i25 Internal Filter is rated 5.0 out of 5 by 1.
Rated 5 out of 5 by from Oddly great I'm not a big fan of Marina product, but this little guy is my top filter for anything under 5 gallon. I mainly use it for 2.5 planted betta tanks. It's simple, silent and very easy to pull apart to clean. Cartridges are cheap and are a great balance of chemical and mechanical filter. Basically, the plastic notches and your substrate acts as some sort of bio filter. Only down sides is that when it gets dirty and slippery, water pressure can push the catridge out and the plastic brace that holds it in place makes the suction cups hard to adhere if you use the brace. Very good filter, been using 3 for a bit more than 2 years.
Date published: 2017-01-17
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