Cation Resin Filter Cartridge (Refillable) for Water Softening, Size - 20" x 4.5" Choose Pack::5 Pack Their purpose is to enhance

Their purpose is to enhance operations and products through the provision of superior water purification

Designed as a powerful anion filter cartridge

and other harmful contaminants from your water

Note: Pipe sizes do not refer to physical dimensions

making it ideal for both beginners and experienced aquarium enthusiasts

Cation Resin Filter Cartridge (Refillable) for Water Softening, Size - 20" x 4.5" Choose Pack::5 Pack Their purpose is to enhanceElevate your water quality with the 20" Big Blue Cation Resin Filter, designed for hardness reduction and water softening. This filter, sized at 4. 5 inch x 20 inch, perfectly fits Big Blue filter housings. Utilizing an ion exchange process, it effectively reduces calcium and magnesium in tap water, softening it for various applications. While also capable of removing low concentrations of iron in tap water, it's recommended to use an Iron filter for