People come in year after year to prepare for their pool closing, and these are some of the myths about proper pool closing that people are unfortunately misinformed about. We’ll set them straight for you!
1. Air pillows are made to hold the cover up. False!
Air pillows are not designed to hold the cover up under the weight of snow and ice. They are designed to relieve the stress when the ice expands and SACRIFICE themselves instead of the ice pushing out and damaging the pool walls. It’s better to have more than one, they will pop as the ice expands! You should need to replace them each winter. (Only fill your air pillows about 70%)
2. Using a chemical floater under the cover will reduce the potential of algae growth over the winter. False!
When you use a chemical floater like this under the cover during the winter, the chemicals can not disperse properly because there is no circulation in the pool. The chemicals will release from the floater and sit on the bottom of the pool, and will not sanitize or oxidize anything in the other parts of the pool. The best thing to do is to use a winter shock and algicide and have your water tested to make sure your water is properly balanced before closing it up for the winter.
3. You can just close a green pool and the cold weather will kill the algae. False!
The cold environment makes for worse living conditions for algae, but when you open your pool in may there has still been enough sunlight, warmer weather and (more than likely) a lack of sanitizer in the water to allow better conditions for the algae to grow back. You should always balance the water and make sure your Chlorine is in the best range before you close the pool.
Also note that if you have a Loop Loc (or any other brand) mesh safety cover, the cover allows water from rain and snow to pass through, diluting the winter chemicals that you have added before closing. You can add BioGuard Algae All 60 through the cover once around Thanksgiving, and once around Easter to help prevent algae from growing. (Never add shock through the cover!!!) Safety covers are made for safety, not for water balance so you should take extra preventative measures to help.
4. Use a Gizzmo in your Above Ground skimmer to prevent ice damage. False!
Gizzmos are for In Ground use only. NEVER use a Gizzmo in an Above Ground skimmer. When you put a Gizzmo in an above ground skimmer, the water in both the skimmer and the pool will freeze and form an arm of ice around the Gizzmo. At this point the ice in the skimmer and in the pool are attached, so when the weight of the water and ice on top of the cover push down on the layer of ice in the pool, it will drag the arm of ice around the Gizzmo in the skimmer down as well, and this happens.
To avoid damage from ice and damage from a Gizzmo, use an Aquador. This will allow you to winterize the pool properly without lowering the water in the pool at all. After the Aquador skimmer assembly has been installed, all you need to do when closing is simply snap the lid on!