Single Replacement Cartridge for the Clear Blue Ionizer System.
ClearBlue is a pool ionizer system. Combined with a reduced amount of chlorine or bromine, it provides a safe, low maintenance and cost effective solution for maintaining clean, clear water in your pool.
ClearBlue continuously releases microscopic ions into the water that assist in controlling algae. Ions are picked up by the water as it passes over an electrode that is installed into the plumbing of your pool or spa.