The 10 Best Undergravel Water Filter

The Penn Plax Penn Plax Undergravel Filter combines the function of a traditional filter while offering maximum viewing since it’s hidden out of sight. Designed for 40 to 50 gallon fish tanks, this undergravel filter uses mechanical, chemical, and biological filtration to filter harmful pollutants from your aquarium. Undergravel filters create the most natural bacteria bed for fish tanks and provide effective aerobic filtration. Included are 4 filter plates (each measuring 11.5″ X 11.5″) with extra large 1 inch adjustable lift tubes. These lift tubes carry bubbles from the bottom of the aquarium to the top creating a gentle flow of water through the gravel and up the lift tube. Designed with narrow slat openings, the gravel is prevented from falling through to filter cartridge. Air pump and airline tubing not included.

FEATURE:
Aerating water to increase O2 level
Accelerating water circulation
Changing and pumping water for your aquarium tank to create a healthy environment for your fish
Strainer to block debris from entering pump
Suction cup mounting feet for either vertical or horizontal mounting
Contains no seals or messy oils
SPECIFICATION:
Max Flow Rate: 650 GPH (2450L/H)
Recommend Tank Size: 50 Gal
H-Max (Lift height): 6.9 feet
Length of power cord: 5.5 feet
Outlet: Fits 5/8″ ID (inside diameter) tubing
Diameter of intake: inner: 24.5 mm, outer: 26.5 mm
Voltage: 110-120V/60Hz
DIMENSION:
6.10″ x 5.50″ x 3.35″ (L x W x H)
INCLUDES:
(1)Pump
(1)Aeration tubing

For the ultimate in convenience and quiet, choose a Whisper In-Tank Filter. These filters mount on the inside of the aquarium, rather than hanging from the outside — making it possible to place the tank flush against a wall. In-Tank Filters are unusually quiet, since the motor is under the water. Offering the same quality and performance as an external filter, the Whisper In-Tank Filter will function in as little as 2 inches of water — making it ideal for turtle tanks, or for creating a waterfall inside the tank.The Whisper In-Tank filter features adjusts easily to high or low water levels with mounting suction cups and/or bracket. Each filter comes with one pre-assembled Whisper Bio-Bag filter cartridge.

Small World Aquarium Filters are specifically designed for small aquariums of all shapes and sizes up to 5 gallons. Quick and easy to install, Small World Aquarium Filters keep your water crystal clear while eliminating contaminants and maintaining a healthy environment for your fish. This filter includes a bracket measuring 4-1/2″x 1-1/2″x 1″ and fits in almost any small aquarium with an easy to replace disposable cartridge filter. The high quality disposable cartridge consists of carbon and zeolite for chemical filtration combined with a bio foam sponge. The zeolite crystals eliminate ammonia while the top quality activated carbon removes harmful gases and odors. The bio foam helps promote biological filtration leaving you with crystal clear water. These filters attach easily to any air pump (not included) using your existing tubing and will help keep your small aquarium healthy and looking beautiful.

The Flow Under gravel Filter is a biological filtration system for fresh or saltwater aquariums.

The filter circulates water through the gravel bed and oxygenates it for beneficial bacteria growth.

pls see the Pipe diameter on item page, it’s the size suitable with a filter, and it could using with any kind of filter, or a submersible pump or outer filter.

Lee’s Premium Undergravel Filters have a multi-level plate design made of special quality plastic which resists splitting or cracking

Lee’s Premium Undergravel Filters have a multi-level plate design made of special quality plastic which resists splitting or cracking

From industry firsts to industry standards, Marineland products are designed with both performance and style in mind. We push precision and power beyond the expected and listen to our loyal customers to make our products even better. We do this because at the heart of our innovative spirit is a desire to help hobbyists everywhere do more, create more and, most of all, enjoy more. So whatever your customers are passionate about — freshwater or saltwater, big or small, beauty or science — help them make their aquarium their own. Make it Marineland. Penguin power heads deliver constant flow in freshwater and marine aquariums. Fully adjustable aeration maximizes oxygenation in freshwater aquariums. This product is the perfect upgrade to your undergravel system, replacing the need for independent air pumps and stones. In marine aquariums the flexible mounting options and fully adjustable outlet make the Penguin Power Head the ideal choice to add necessary water flow to your reef aquarium.

Description:

– 100% brand new and high quality.

– As a bottom filter plate accessories, easy to assemble.

– Made of plastic, bright and never release toxic substances, ensure the safety of fish and shrimp.

– Effortless setup and easy maintenance make this premium undergravel filter a must have for all home aquariums

– This undergravel filter hides from view for maximum aesthetics. Safe for use in both freshwater and saltwater tanks.

Specification:

– Material: Plastic

– Height: Approx. 32-51cm/12.6-20.08inch, Large Diameter: Approx. 2.2cm/0.87inch, Small Diameter: Approx. 2cm/0.79inch,Outlet pipe length: Approx. 4.2cm/1.65inch, bottom length: Approx. 5.3cm/2.09inch, hose head length: Approx. 54×0.5cm/21.26×0.2inch

Package Includes:

2 Piece Draft Tube

2 Piece Hose

Note:

Since the size above is measured by hand, the size of the actual item could be slightly different from the size above.

Due to the lighting effects, monitor settings, etc. There could be some slight difference in the color tone of the pictures and the actual item.

FEATURE: 1) Aerating water to increase O2 level 2) Suction cup mounting feet for either vertical or horizontal mounting 3) Contains no seals or messy oils 4) Great for under gravel filter or top filter SPECIFICATION: 1) Max Flow Rate: 158 GPH (600L/H) 2) H-Max (Lift height): 3 feet 3) Power: 8 Watt 4) Voltage: 110 – 120 V @ 60 Hz 5) Length of power cord: 4.3 feet

Conclusion

By our suggestions above, we hope that you can found undergravel water filter for you.Please don’t forget to share your experience by comment in this post. Thank you!