A solar cover is the simplest and most cost-effective type of pool cover available. Essentially, it is a polyethylene film, typically between 400 and 550 microns thick. Isothermal solar covers prevent water evaporation and maintain water temperature at night by preventing the water from cooling down. Additionally, the solar cover protects your pool from unwanted debris.
It is possible to choose a solar cover that is more effective against algae (opaque covers that absorb solar heat and block UV rays, thus preventing algae growth) or one that maximizes the absorption of solar energy to heat the water (transparent covers).
