You will want your water temperature to be 65 degrees or below. Why? Because, technically,
algae cannot survive in these temperatures. Now, some algae grow anywhere – ask anyone who has had Mustard Algae.
You may need an extra bag of shock, depending on the size of your swimming pool. I also
recommend a product called "Pool Magic Spring & Fall ."This product is the last thing you add to your water before putting on the cover. Pool Magic contains all-natural enzymes that break down organics, making opening and closing fast and easy. It prevents organic staining through the off-season, which reduces maintenance for the following opening. Used at beginning, it polishes water for eye-catching appeal. One bottle is generally enough. We use this product on all pools we close and open, which really works! Remember the filter cleaner!!! Sand, cartridges, and DE grids all need to be chemically cleaned.
Make sure your pool is clean. Brush walls and floor, vacuum the bottom of the pool, and net
any debris off the top. You want your pool to be clean and clear. I suggest cleaning your pool
tools and storing them in a dry place.
You should now winterize your filtration system. If you have an above-ground pool, you will
want to disconnect the hoses from the collection and pump. Inground pools are usually hard plumbed, so you do not have to remove the hoses. Remove all plugs from the motor and filter tank. If you have a pressure gauge, can that also be? I recommend putting all of these small parts in the pump basket next to the motor – they will be safe and will not be lost come Spring. If you have a Multiport Valve, put the valve in the winterized position. Cartridge filters should have the cartridge removed and stored in a dry place. DE filters should have all the DE rinsed out of them, and the grids washed down and stored in a dry place. Now for the skimmers and return fittings. Skimmers should have a widget screwed into them. How the Gizzmo Works: Every pool has a skimmer. When water freezes, it expands. The expansion breaks the skimmer.
The Gizzmo absorbs the expansion. The water crushes the widget instead of destroying the skimmer. It's That Simple! The Gizzmo is designed to absorb the development of winter freeze-up in skimmers only. The return fitting(s) also need to be winterized. You will first need to take the outside ring and eyeball out (put them in the pump basket with all the other small stuff). Now plug the hole. You can use a specialized plug with a gasket that screws into the return fitting from the inside of the pool. You can also use a freeze plug. You put This plug in the return fitting and tighten it using a wing nut.
I have one other piece of advice – if you have an above-ground pool and are having trouble keeping the cover down, you can use empty milk jugs or soda bottles filled with water and hang them from the grommets of the body. I have had a couple of customers in a high-wind area tell me that this is not necessarily a good idea because the wind may scrape the pattern off the walls.