Yes. If the water level is below the suction ports (skimmer) no water can get into the pump. Pumps move water not air. This can severely damage your pump and associated Plumbing. Not to mention your water will turn cloudy and possibly green from lack of filtration and the inability of your chlorinator to function. Always keep the water level at least half way up the skimmer. Approx. 2".
Check to see if there is a leak in it. You can do this by taking the cover of the pool and marking the water level, then take a bucket of water mark the level on it. place the bucket next to the pool and leave it there for a few days. if the level in the pool drops the same as the level in the bucket then the reduction of water is the result of evaporation. however if the level in the pool drops more then the level in the bucket you are loosing water somewhere.
To properly close a swimming pool for the winter season, you should first clean the pool thoroughly, balance the water chemistry, lower the water level, remove any accessories or equipment, cover the pool with a winter cover, and winterize the plumbing system to prevent damage from freezing temperatures.
To effectively winterize your pool, you should start by cleaning and balancing the water chemistry. Then, lower the water level, remove any accessories, and cover the pool with a winter cover to protect it from debris and freezing temperatures. Additionally, consider using a pool antifreeze to protect the plumbing system from potential damage.
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If you have a deck level pool or spa (water level with the top of the pool, that usually overflows into a grating around the pool) when people get into the pool their body displaces water, this water is stored in the Balance tank until the people get out and the water is pumped out of the balance tank and back into the pool. A skimmer pool that has a lower water level than the top of the pool does not need a balance tank as the displacement is handled by the water level rising. Deck level pools and spas are considered more aesthetically pleasing.
A solar blanket is an inexpensive way to heat your pool water. It should not stay on during the of season. I recommend a winter pool cover. However, the heat fgenerated from the solar cover absorbs a significant amount of chlorine and tends to lower the Ph level in the pool. I suggest you regularly, atleast once a week, check the chemical levels in the pool water.
The check valve between the spa and the pool is defective.
To lower pool water below the skimmer, you can use a submersible pump or a garden hose to siphon water out. If using a pump, place it in the shallow end of the pool and let it run until the water level drops below the skimmer. Alternatively, you can create a siphon by placing one end of a hose in the pool and the other end at a lower elevation, then filling the hose with water and letting gravity do the work. Always ensure to monitor the water level to avoid damaging the skimmer or pool equipment.
The only way to lower your cya level in your swimming pool is to partially drain your pool and fill with fresh water that will lower it or if you want to lower it to almost nothing completely drain your pool and start over but keep in mind chlorine tablets will raise your CYA level More information in the related link below.
If the calcium is a result of pool chemicals, draining some or all of the pool water will lower the calcium hardness level. If the cause is the fill water, commercial hardness reducers or chelating agents will bond with the calcium to keep it trapped in solution.
You could drain it down to the correct level if you feel better about it or you can just let it come down naturally and take advantage of the free water. I have a floating pool skimmer to keep my pool clean and it makes no difference whether my pool is full or nearly empty.
A good way to see if you have a leak in your pool is to # take a bucket and fill it with water from your pool. # mark it at the water level. # mark the pool at the water level. # wait a few days if there is no leak in the pool then the water level in the bucket should have reduced by the same amount as the water level in the pool, however if the water level in the pool has gone down more then the water level in the bucket you have a leak in the pool or in the pipes around the pool.