A pool that is "balanced" has proper levels of pH, Total Alkalinity, and Calcium Hardness. These are: pH: 7.2-7.8, Total Alkalinity: 80-120 ppm, Calcium Hardness, 180-220 ppm and Cyanuric Acid (Stabilizer): 30-50 ppm. Chlorine levels should remain constant in the 1-3 ppm range.
A good chlorine level is between 1.0 and 4.0 parts per million (ppm), while the pH should be between 7.2 and 7.8.
The water level should be about one-third of the distance below the top of the skimmer. You may be able to judge the distance using the screws that hold the assembly in place as a guideline. Some assemblies may have a marker to indicate the best water level.
If your pool water level is too high, your pool will likely experience skimmer malfunctions, pool water overflow, deck damage, and a chemical imbalance. The best fill level for your pool is about ⅓ inch (0.85 cm) from the top of the pool skimmer. Any higher, and the skimmer will malfunction.
If the water in your swimming pool is too low, the skimmer can bottom out and suck air into your filter system. And when that happens, you're at risk for burning out the motor on your pool pump. This could be a costly problem, which is why you should definitely keep an eye on the water level of your swimming pool.
Proper pool pH is right in the middle — pool pros recommend that pH be between 7.3 and 7.6 for optimum performance and cleanest water. If the pH gets higher than 7.8, the water is becoming too alkaline.
Using liquid chlorine raises the pH of the water.
Liquid chlorine does not raise pH. When added to water, liquid chlorine (which has a pH of 13) makes HOCl (hypochlorous acid – the killing form of chlorine) and NaOH (sodium hydroxide), which raises pH.
If the chlorine smell is very strong, however, you may soon spot “red-eyed” swimmers emerging from the pool. That's when the pool water is assumed to have “too much chlorine” in it. Ironically, a strong chemical smell around the pool and “swimmer red eye” may be signs that there is not enough chlorine in the water.
At chlorine levels over 10 ppm, swimsuits can begin to fade. Pool covers become damaged, and the water is generally uncomfortable and unsafe for swimmers. Close the pool and keep covers off until chlorine levels fall back below 5.0 ppm.
Safe chlorine levels range between 1 and 3 parts per million. At concentrations above 6 ppm, the pool is unsafe.
Lowering Free Chlorine
Chlorine neutralizing chemicals such as sodium thiosulfate or sodium sulfite will lower chlorine levels more quickly, but they will also significantly alter the pool's pH level and will neutralize all of the chlorine in the water if they're overused.
Rule of thumb is to do the PH first. And do not bother to drive to pool store to spend the extra money for a PH DECREASER. Buy a plain baking soda for 50cents a pound in Walmart! Chlorine will not work fully until your PH is in the proper range.
Low pH water will cause etching and deterioration of plaster, grout, stone, concrete and tiling. Any vinyl surfaces will also become brittle, which increases risk of cracks and tears. All of these dissolved minerals will hold in the solution of your pool water; which can result in staining and cloudy pool water.
Add soda ash if your pool's pH level is below 7.2. Add Muriatic Acid or Sodium Bisulfate if it's above 7.8. Continue to add appropriate product until your water has a pH level of 7.2-7.8 (ideally 7.4-7.6).
Can You Safely Swim in a Pool With High Alkalinity? As long as you have enough chlorine in your pool (around 3ppm for total chlorine) and the pH level is balanced (between 7.4 to 7.8), then a pool with high total alkalinity is still safe to swim in.
Add vinegar to the water for an inexpensive fix.
The natural acidity of the vinegar will help neutralize the alkalinity in the water, bringing a pH of 7.5-7.7 down to about 5.8-6.0. Vinegar has a pH of 2-3 and lemon juice has a pH of 2, so their effect on water is similar.
Here are common causes of an alkaline pool: Algae can raise the pH. Adding strong liquid chlorine, calcium or lithium hypochlorite chlorine may raise it. Suddenly heating the water, whether from a pool heater or a string of sunny days, could up the pH.
As per standard, 1.25 pounds of baking soda is enough to raise the PH level of a 10,000-gallon pool by 10ppm, so to achieve a 100ppm alkalinity, you would need 12.5 pounds of baking soda for a 100,000 gallon of pool water.
Use Aeration to Raise Pool pH
Looking to raise pH without affecting Total Alkalinity? You can sometimes raise the pH through aerating the pool water. Yep, just add air! It's the same reason hot tubs and spas often suffer from high pH issues.
Obtaining a pH level requires an aqueous solution because pH is the result of the comparative amount of free hydrogen and hydroxyl ions in a water-based solution. Adding baking soda with its pH of 9 to water with a neutral pH of 7 raises the pH level of water.
How Often Should I Shock My Pool? Shocking your pool regularly will help to keep the water clean and free of contaminants. You should aim to shock your pool about once a week, with the additional shock after heavy use. Some tell-tale signs that your pool needs to be shocked are cloudy, foamy, green, or odourous water.
Using baking soda will not actually lower your pool's chlorine level. If your ph is way too low it may. Prevent corrosion and damage to pool equipment; To raise your ph levels, it can be as simple as adding seven to nine pounds of baking soda to your pool water.
"Shocking” refers to the process of adding chlorine or non-chlorine pool chemicals to the water in order to raise the "free chlorine” level. The goal is to raise this level to a point where contaminants such as algae, chloramines and bacteria are destroyed.