For crystal clear water with convenient, trouble-free maintenance. Top quality activated carbon removes harmful gases and odors. Clears up unsightly discoloration. Quick, easy, and disposable.Fits lift tubes of most undergravel filters.
For best results, your Filt-A-Carb Cartridges should be replaced every two to four weeks. They slip easily onto all undergravel filter lift tubes with no need to disturb set-up.