One of the most important qualities of the cover pool is that it prevents the passage of light. Without this light it is impossible to live microorganisms that stain the water the color that ugly green. By early summer, just have to remove the cover, clean pass - funds and the water will be completely clean, without change, saving the precious item, and working with the environment.
In addition, completely abolishes the risk of potential bottlenecks in the flow pipe, by falling leaves, soil, or other items. What's more, thanks to the air cushion between the water and the canvas in the winter suppresses the formation of ice, which as you know, is a common cause of breakage or cracking of the glass of the pool.