If you have invested in a solar pool heating kit from Solarmarketers.com we say thank you! Now, in order to hold that free solar generated heat in during the cooler evening hours you are going to need a pool cover system. The Solar Sun Rings offer a smart and efficient solution to keeping the heat in the water while not allowing for a water environment that promotes algae growth. Our selection of pool covers is constantly expanding. We will be adding new covers each week. Check back with us from time to time. We would love to help you heat your pool using the cleanest solar energy products available.