There are no established rules for opening swimming pools, and the exact time depends largely on the region of the country. Mid-March is fine after a milder winter, while mid-March is April. Mid-March is fine after a milder winter, while April is better after a cooler season. As winter approaches its final cold, it can be tempting to want to remove the pool cover. While there's no exact date on the best time to reopen the pool after the winter season, it's best to wait until temperatures in your area are at least 50 degrees or higher.
Whether your pool is heated or unheated, this is the optimal time to prepare it for the fun-filled days ahead. I recommend removing the solar cover from the pool during the day, as this has more advantages than if you left it on. That said, if you decide to keep the solar cover on, it's not the end of the world. Just remember to remove the cover at least once a week to allow the collected carbon dioxide to escape and for the pool water to breathe. Here are some advantages and disadvantages of leaving the pool's solar cover on or off during the day.
If you open too soon, leave the pump on and reinstall the pool cover until the weather warms up again. Excess water poses the risk of the cover falling into the pool or creating the perfect environment for certain organisms to thrive. However, if you don't mind using your pool skimmer on a daily basis and you don't normally have a lot of dirt to clean up, you may be fine without a cover. If you have a solid pool cover, make sure the chemicals are balanced so that algae don't reproduce underneath while it's covered.
There are a couple of reasons why it would be desirable to leave your pool's solar cover on during the day. Since El Niño weather conditions are expected, it's important to pay special attention to the pool cover. It's no secret that one of the reasons to invest in a backyard pool is aesthetics, so you might be reluctant to use a pool cover regularly, even if it's just overnight. Due to their thickness, it is recommended to remove solid pool covers during the day during warmer seasons. This seems pretty obvious, but if you're not going to use the pool or plan to use it for some time, it's best to leave the cover on.
If you wait until late April or May (Indiana experienced 90-degree temperatures in May 2018), you might discover a swamp when you remove the pool cover. Properly covering your pool is an important part of preventing damage to your mechanical systems, keeping it clean, and ensuring that your family can enjoy it for years to come. When you fall into the pool, the risk of debris entering the pool and causing algae blooms increases. By removing it, you allow the water to heat evenly throughout the pool and you will avoid prolonged damage to the outer surface of the pool cover.
Pool covers, both solar and solid, are a great way to keep dirt away from water and prevent water from evaporating overnight.