Pool light replacements are often more expensive compared to other pool parts, like pump motors, or standard light bulbs for indoor use. The reason for the higher cost is that pool lights are specially designed and made with parts meant to keep swimmers safe. The light fixture and surrounding parts protecting the bulb must be waterproof, tightly sealed, and resistant to extreme temperatures.

Your pool should only lose around 1/4 of an inch of water per day, give or take. More wind, sunlight, and heat will cause this number to increase, while rainy or cloudy days will decrease the amount of water that evaporates.

Yes, you can put too much shock in a pool, and it is crucial to follow the directions on the product you are using. Adding excess shock can upset the chemical balance, make the water cloudy, have adverse effects on swimmers, damage pool equipment or surfaces, and even encourage certain types of algae to grow. If you have over-shocked your pool, perform a water test and adjust the chemicals as necessary. The pool's chemical balance will eventually return to normal as the excess chlorine dissipates over time.

Yes, many brands make models similar to endless pools with a range of features. Some companies feature temporary aboveground pools that imitate the effect of permanent installations. Small home pool spas—or spools—as well as lap pools and pools without propulsion designs for water aerobics are also available.