Filbur antimicrobial cartridges prevent harmful bacteria from growing on the cartridge. Less bacteria results in a reduction of foul odor, algae, black mold and other harmful contaminants which foul a cartridge.
Antimicrobial protection lasts as long as the cartridge itself and is easier to clean than other filter in the marketplace.
Pretty satisfied all the way around. Web site was easy to navigate through, good price on the item compared to local Spa Store price, shipped quickly, and arrived as promised.