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.
You can expect to swim an extra month at the beginning and end of the season. They will raise the water temperature by about 10 degrees. A solar cover is a must for using any other type of heater because they help heat the pool by day and prevent heat loss by night. The next options are solar panels. Your filter pumps water through the panels and back into the pool. The bigger the pool the more panels you will need. The panels can be mounted on the ground or on a roof. The most expensive way to go is the electric or natural gas heaters.