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Lee's Undergravel Filter 20S Gallon

Lee's Undergravel Filter 20S Gallon

Item #: 010838132255
You Save: $4.40 (19%)
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Lee's Undergravel Filter is the key to providing a strong biological filtration system. Placed on the bottom surface of the aquarium, the filter plates utilize the gravel bed as a source of surface area and provide oxygen by recirculating the water down through the media and up through the uplift tubes. Designed with adjustable 1" uplift tubes for better water circulation. Multiple plate construction for easy installation. Includes airline diffusers and carbon cartridges and has a fish-saver feature. Advance design allows separate plate installation and features optional flow-thru set-up which can be used with a power head. Made of special quality plastic which resists splitting and cracking. Contains three each: under gravel plates, connector rings, uplift tube assemblies, airline tubing with connectors, air diffusers with connectors and disposable carbon cartridges. For use in freshwater and saltwater aquariums. For 20S gallon aquariums 10" x 30".


  • Fish Saver Elbow
    Protects fish from injury.
  • Air diffusers
    Oxygenates the water.
  • Easy-to-Install Carbon Cartridge
    Keeps water sparkling clean.
  • Gravel Guard
    Keeps gravel from clogging the circulation system.
9 Reviews
78% (7)
0% (0)
0% (0)
11% (1)
11% (1)
78% Recommend this product (7 of 9 responses)
By Nellie Carrion
April 12, 2018
Good quality
Perfect fit. Works great.
ProsWill recommend.
By klh
September 23, 2017
Not impressed with this filter
I have used undergravel filters in a number of aquariums and liked them. However the aquariums have all been 20 gallons or larger. This filter is not the same. The air stones sent plenty of bubbles but they didn't exit through the charcoal filter. They just rode over the top. The bubbles were very loud popping on the surface as well. I am not using the filter.
By Jacque Kendall
March 19, 2016
Great product
Great product just what I needed. Fast shipping and well packaged.
By Sharron
December 3, 2015
does not work as well as I thought it would
By Beverly
Southeast georgia
October 2, 2013
Perfict for Betta Fish
Great Filter easy to assemble. The tubes are adjustable for height. Puts you in control of the flow by adjusting the air (simple, inexpensive air valve needed to control air flow not included ) Your betta or other long finned fish will simply love it. You get biological and carbon filtration all in one. The shipment did get put on back order. But that being said, they did a good job all around.
Prosease of assembly . easy flow for betta. company does keep you posted email .
By Ken
Meridian, ID
July 31, 2013
Good product
This product is just as promised. It can be as two units or joined into 1 big unit. Just what I needed.
ProsThe versatility
By Ed Slepawic
chicago, illinois
August 1, 2012
underground filter
Perfect fit , easy to assemble .
ConsThe charcoal filters fell out a few times but its a good item , filtering ok
By Khoury
Houston TX
September 19, 2011
Shipping was fast and product exactly as described
Have not yet installed in tank but I'm sure it is going to work great.
By Michael Luigi Delrossi
United States
August 18, 2011
So far installed seems to be working as advertised!
So far installed seems to be working as advertised!
Lee's Carbon Cartridges 2pk. #13025
Lee's Carbon Cartridges 2pk. #13025
4 Reviews