One of the best ways to keep your freshwater aquarium clean is through the use of an under gravel filter. The idea is that bubbles will draw waste and debris to the bottom of the tank where your cleanup crew (snails, plecos, etc) can take care of it. Whatever they don’t get can easily be removed by you, using a siphon.

Our available under gravel filters are listed below:


Lee's 2-1/2 Original Undergravel Filter, 6-Inch by 12-Inch
14.51 14.51 click here to buy Lee's 2-1/2 Original Undergravel Filter, 6-Inch by 12-Inch


Penn-Plax Undergravel Aquarium Filter for 40-55 Gallon Tanks – Four 11.25” x 11.25” Plates – Under Gravel System for Clear, Clean Water – Safe for Freshwater and Saltwater Tanks (CFU55)
29.99 26.6 click here to buy Penn-Plax Undergravel Aquarium Filter for 40-55 Gallon Tanks – Four 11.25” x 11.25” Plates – Under Gravel System for Clear, Clean Water – Safe for Freshwater and Saltwater Tanks (CFU55)


Penn-Plax Undergravel Aquarium Filter for 10 Gallon Tanks – Two 9.5” x 9.5” Plates – Under Gravel System for Clear, Clean Water – Safe for Freshwater and Saltwater Tanks
11.45 11.45 click here to buy Penn-Plax Undergravel Aquarium Filter for 10 Gallon Tanks – Two 9.5” x 9.5” Plates – Under Gravel System for Clear, Clean Water – Safe for Freshwater and Saltwater Tanks


Penn-Plax Filt-a-Carb Replacement Activated Carbon Media Cartridges (2 Pack) – Fits Multi-Pore and Undergravel “E” Filters – Provides Chemical Filtration (FC2)
5.99 5.99 click here to buy Penn-Plax Filt-a-Carb Replacement Activated Carbon Media Cartridges (2 Pack) – Fits Multi-Pore and Undergravel “E” Filters – Provides Chemical Filtration (FC2)


Penn-Plax Undergravel Aquarium Filter for 15-20 (high) Gallon Tanks – Two 11.2” x 11.25” Plates – Under Gravel System for Clear, Clean Water – Safe for Freshwater and Saltwater Tanks
13.44 13.17 click here to buy Penn-Plax Undergravel Aquarium Filter for 15-20 (high) Gallon Tanks – Two 11.2” x 11.25” Plates – Under Gravel System for Clear, Clean Water – Safe for Freshwater and Saltwater Tanks


CORISRX BEST OF YOUR LIFESTYLE Undergravel Filter 11.8" X 5.9" Fish Tank Under Gravel Filter
15.99 15.49 click here to buy CORISRX BEST OF YOUR LIFESTYLE Undergravel Filter 11.8


Lee's 125/135 Premium Undergravel Filter, 18-Inch by 72-Inch
107.55 107.55 click here to buy Lee's 125/135 Premium Undergravel Filter, 18-Inch by 72-Inch


XMHF Plastic Aquarium Undergravel Filter Board Air Pump Line Hose Tube 20 Pcs Black
30.79 30.79 click here to buy XMHF Plastic Aquarium Undergravel Filter Board Air Pump Line Hose Tube 20 Pcs Black


Penn-Plax Clear-Free Premium Under Gravel Aquarium Filter (UGF) – Freshwater and Saltwater Safe – Suitable for 20 – 29 Gallon Tanks
14.99 14.99 click here to buy Penn-Plax Clear-Free Premium Under Gravel Aquarium Filter (UGF) – Freshwater and Saltwater Safe – Suitable for 20 – 29 Gallon Tanks


freneci 10PCS Aquarium Fish Tank Sand Undergravel Filters Board Plate Black Plastic
9.29 8.89 click here to buy freneci 10PCS Aquarium Fish Tank Sand Undergravel Filters Board Plate Black Plastic