Usage Notes. Many authors of usage guides, editors, teachers, and others feel strongly that such âabsoluteâ words as complete, equal, perfect, and especially unique cannot be compared because of their âmeaningâ: a word that denotes an absolute condition cannot be described as denoting more or less than that absolute condition.
A solar blanket or solar pool cover gives you free heat from the sun. They are somewhat similar to bubble wrap (only made with more durable material). You can buy this in big sheets that you cut yourself to fit your pool. These are definitely the most economical way to raise the temperature of your pool.
With a properly sized solar pool heater, a pool cover is normally not required to keep the pool at a comfortable temperature during the normal swimming season. However, a pool cover does help retain heat at night and prevent evaporation loss. The cover traps the solar heat that has been added during the day, and is very complementary to the solar pool heating system. The solar pool heating system can be viewed as actively adding heat. The cover retains that heat passively.