Used to keep the swimming pool clean by releasing copper and other minerals into the swimming pool.The chlorine-free solar shock replacement copper anode is a secret mixture of metals that kill microorganisms and prevents the growth of metals in the pool.Replacing copper anodes can help you save 80 percent of your chlorine costs.Suitable for Solar Pool Ionizer Purifier Chlorine Free PurifiersType: Copper Anode for Solar Pool Ionizer PurifierInstallation: VerticalPurifying Position: Terminal PurificationWater Quality Requirements: Municipal Water or Well Watercolour:Copper colorMaterial:Copper alloysize:1.8 x 10.5cmPackage Contents:1 x Copper AnodeOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.