Best Internal Filters For Fish And Turtle Aquariums

This clip-on filter is suitable for small tanks with up to 6.6 gallons of water. The filter works on a unique mechanism that allows water to enter the center of the cartridge. This allows the internal filter to work effectively at eliminating odor and toxic ammonia in the water. The filter operates so quietly, you can even have your tank beside your bed and not worry about the noise.

This in-tank filter is quiet and well-suited for small aquariums holding up to 10 gallons. It uses a medium Whisper bio-bag cartridge and a patented Bio-scrubber pad to provide a three-stage filtration. The Whisper bio-bag cartridge is a floss pad filled with activated carbon to eliminate waste particles, odors, and discoloration in aquarium water. The Bio-scrubber pad provides the house for helpful bacteria to colonize and performs biological filtration processing nitrogenous toxins from fish waste and uneaten food.

Tank owners will like this in-tank filter for its large filtration chamber and better performance like external filters. This is suitable for tanks mounted against the wall, or any other configuration that would not work with external filters. It is a silent and efficient solution to keep your fish happy and healthy because it provides optimal biological filtration. You can use this as a stand-alone filter or as a supplemental filter for a bigger tank.

The filter comes with 2 foam pads that take care of large particles, 2 poly/carbon cartridges, and 90 grams BioMax. These filter materials are the most advanced ones in the market from Hagen Fluval. Inside the filter, they are organized to create a multi-stage filtration system from foam pad to carbon cartridge and finally to Biomax. In the first stage, the foam pad mechanically traps large particles. In the second stage, the carbon cartridge traps fine debris and eliminates impurities to improve water clarity and smell. Finally, Biomax provides the best environment for helpful bacteria to process nitrogenous toxins to protect your aquarium inhabitants.

If you’re looking for an in-tank filter that’s versatile, look no further. Aqueon gives you this fully submerged filter that can be positioned horizontally or vertically. You can adjust the return flow rate, as well as the height and direction of water return. What makes it loved by many hobbyists is the very large filter chamber for the free of using filter media. You can use your favorite filter materials or ones coming with the product package.

If you want an in-tank filter that offers advanced physical, chemical, and biological filtration while increasing the aeration of your fish tank, Penn Plax Cascade 600 is a submersible filter for you. Able to deliver up to 175 gallons per hour of flow rate, the filter is an ideal choice for 20-50 gallon fish tanks or terrariums.

The Penn Plax Cascade 600 internal filter is able to clean your aquarium at different levels. It is equipped with an activated carbon cartridge to get rid of harmful chemicals and toxins, odors, discoloration, and other contaminants in the water. It also comes with an internal sponge that improves the colonization of beneficial aerobic bacteria, which provides a healthy balance in the aquarium environment. Thanks to its large capacity, you can choose your favorite filter media to use.

This in-tank filter is a good choice for the filtration system of fish or turtle tanks up to 50 gallons. It has a 235 GPH output and is ideal for both freshwater and saltwater environments. With dimensions of 3 1/2″ x 2 1/2″ x 12 1/2″, it can fit most tanks with ease. It also has an air line hose for oxygen input, which increases the aeration of your tank and makes your fish and turtles active and healthy.

This filter features a dual intake system, one comes from the bottom of the filter, and the other one from the top plays the role as a surface skimmer, which keeps the water surface free of dirty particles. The system is composed of a 1-pump, 2-impeller return system that provides optimal water flow. You can also configure the filter to include a spray bar.