Description: Copper Anode Function: Anode solar copper for swimming pool solar that will help keep your swimming hot . Keep Swimming : The ionization purification rod process limits the growth micro organisms and removes unwanted mineral such as calcium in the pool water, and prevents algae from growing in the pool and keeps it clean and clear. Save Money: The solar pool purifier is a solar powered small, portable, weatherproof, long lasting for using. Features: Replacement Copper Anode helps save you 80% on Chlorine costs. Work Princple: The solar ions pierce the protective outer membrane of algae and bacteria cells, disrupting the enzyme balance, inhibiting growth and water purification. Specification: Material: Copper Alloy Size: 1.8x10.5cm/0.71x4.13inch Package Includes: 1 Piece Copper Anode Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item.