Clear-N-Clear - Undergravel Filter 20 Gallons For best results

For best results

and other desert-dwelling species

Neck CC: 47 - 64cm

Oakley Measures 29cm/11″ in length without the tail or 40cm/16″ with the tail

Clear-N-Clear - Undergravel Filter 20 Gallons For best resultsThe Penn Plax Penn Plax Undergravel Filter combines the function of a traditional filter while offering maximum viewing since its 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