Pool care in winter

During the cold winter months pool water tends to stay clear with very little help. Generally algae does not appear and I hardly ever see a pool turn green. Any algae growth that does occur is extremely slow.

Of course winterizing is ideal, but many of our pools are not winterized. To these we add an occasional dose of chlorine and run the pump at least once a week. Vacuuming requirements are negligible – once every 3 or 4 weeks is plenty under normal circumstances.

Winterized pools? We cover them and forget them until April or May, which is so much easier.

At the end of the day it is the pool owner who makes the decision and either way we are happy; our pools are always clear and blue.

101 thoughts on “Pool care in winter

  1. Running a pool service in Elk Grove, CA, we find that people are out enjoying their pools year round. Covering a pool is an eye sore. The daily accumulation of dust and debris builds up on the cover, waiting for a good rain to wash it into the pool all at once. This consumes the avalible sanitizer and causes algae growth. We’ve noticed that while the sanitizer level is easy to maintain during the winter months, the Ph wnats to climb. Letting that happen would cause various problems including scale build up on the surfaces. To fight this we use chlorine tablets year round. The pools stay well sanitized and the very low Ph of the tabs keep the pools in check. The result, a beautiful, sparkling blue pool year round.

  2. We are new pool/hot tub owners..Our pool is connected to our hot tub..Approx. 17,000 gallon pool…
    1. What is winterizing?
    2. Last year, we did not need to use the algae remover..We just cleaned the pool with a gentle cloth and the algae was sucked up by the Diatomaceous earth filtering system…This year, we purchased algae remover and we were advised to add the entire bottle, let the filter run for one hour and then add one bag of shock, then clean filter..
    Why is shock needed afterward?
    Thank you!

  3. I just moved in to a new house and the pool look bad!I got the water clear but the bottom still has dust.I backwash,rinse and filter but it still looks like dirty water coming out of the pump back into the pool!!!Please help???

  4. Remember if you open your pool late and the water temp sneaks above 60f then you are going to be greeted with green algae.

  5. I live in cold enough weather to winterize, I have used a solid cover for years and am wondering if i can substitute a mesh cover in the place of a solid cover?

  6. I have an in-ground pool and at least 3 months of freezing weather. I tried a mesh leaf cover for two years with out a regular pool cover. It keeps the leaves out but smaller particles get through and most important the leaves get wet and begin and the tannic acid starts to leech into the pool, sort of like have a few hundred tea bags. Bottom line, the pool was a nice dark brown and it took a lot of filter cycles to get it clear and getting the smaller particles from the bottom was a real pain. So now I cover it and use the leaf nets on top of the cover and it’s a breeze to pump out any water on top of the cover (I put the pump under the leaf net) the leaves go with the net. The water? perfectly clear like the day I covered it.

  7. Here in the bay area of California with the mild winters we service pools year-round. Here is some helpfull adivice: Keep a Routine/Program
    Find something that works for you and stick to it every week. You should always perform Free Chlorine, Total Chlorine, pH and Acid Demand tests every single week without exception. It is best if you approach sanitizing your pool as a three step process, even if there is some degree of overlap between the steps. Ensure you have some sort of slow, regulated introduction of sanitizer into the pool – a common method is to use 3” chlorine tablets in a floating dispenser or an in-line feeder (salt chlorine generators satisfy this step as well). Have a separate oxidizing agent that can be used to rapidly dissipate undesirable compounds in the water – granular chlorine shock or liquid sodium hypochlorite (bleach) work well for this. Third, an algae preventative product can save you a lot of grief (and money).
    The key is that you find a process that you are comfortable with, addresses the fundamentals of pool care and can be repeated on a weekly basis without too much hassle

  8. With the joy of having a pool there also comes the responsibility of it. Pool winter maintenance is much easier than in the summer months. It is always a good idea to get professional pool maintenance inspection done fro peace of mind.

  9. winterizing your pool in winter is good there is not need to care it regularly proper chlorination and pool cover will keep pool water safe. just heat pool water when it needed will reduce electricity.

  10. We are new pool owners here in So. Cal. (cold, though no freezing weather) and are curious as to how we’d go about winterizing the pool for the next few months. It is in-ground (approx. 35′ x 16′ and 8 ft. deep) and will not be in use. Water levels, Chlorine levels? Should PH and Alkaline levels be checked and kept the same as in summer? Should anything be added to keep algae from forming? How often/for how long do we run the pump and should this include the vaccuum and/or only the skimmer? Also, since our spa has the same water supply, does this mean if we prepare the pool for winter that the spa cannot be used during these months? I appreciate any and all comments. ~Thank You!

  11. This is exactly what we tell our customers about closing their pools or not. It is definitely up to the customers preference. I also tell them to open the pool early in the season so the warm Spring air will not start algae growth and the customer will have to clear up a green pool at the start of the season.

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  14. The best way is to use an automatic pool cover with a thermal blanket for the cold nights and uncover you pool on warmer days. If you have a manual cover you will most likely leave it covered most of the time and swim less.

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