The Cobalt Aquatics Clear Vue 20 Mini Internal Filter is a uniquely designed filtration system ideal for beginners and experienced hobbyists alike. It's specifically designed for nano aquariums with a capacity of up to 20 gallons. The innovative design of the Clear Vue 20 makes maintenance a breeze. The clear filtration chamber allows you to easily monitor the filter's condition, so you know exactly when it's time to clean or replace the filter media. This convenient feature takes the guesswork out of aquarium maintenance. * **Easy to Maintain:** The clear filtration chamber allows for easy monitoring of filter condition. * **Convenient Filter Changes:** Replace or clean the filter without touching the dirty parts. * **Ideal for Nano Aquariums:** Perfect for tanks up to 20 gallons. * **Versatile Use:** Suitable for all water types. * **Internal Filter:** Discreetly sits inside the aquarium. The Cobalt Clearvue Internal filter is a unique and innovative design that has the beginner fish-keeper in mind, but the performance that a hobbyist will appreciate. The filtration chamber makes it very easy to see when the filter needs to be replaced or cleaned. The user can decide to recycle the entire container and replace without ever touching the "dirty" parts.