Do plaster finishes use more chemicals that a pool with a different surface?
NO. Chemical usage is a function of the water not of the pool surface. Conditions such as water temperature, air temperature, wind, humidity and pool usage are the significant variable in chemical use – not the pool surface. If anyone tells you different, ask them for documentation. Does a plastered pool finish encourage the growth of algae, especially the dreaded black algae? NO. As anyone knows who owns a fish aquarium, algae is a function of water, not a function of pool finish. Algae sticks to glass in an aquarium, so it will stick to ANY pool surface. If your pool is properly sanitized you won’t have algae. If you have algae, you haven’t sanitized your pool properly. It’s that simple. Is the water in a plaster finished pool colder than a pool with a different surface? NO. It is well documented that 95% of the heat loss of pool water occurs from the water surface. Only 5% of heat loss is from the shell. No pool surface will eliminate this 5% loss, and if it could, the difference in