Just go to your local pool supply store and ask for pH adjusting chemicals.
For a 20x48 above ground pool, you will typically need chemicals such as chlorine (in the form of tablets or liquid), pH adjusters (such as pH increaser or decreaser), alkalinity increaser, and a pool shock. It's important to regularly test the water to ensure proper chemical balance and adjust the chemicals as needed.
Baking soda will almost certainly raise the pH level in a pool.
PH is lowered by acidic conditions such as leaves rotting in the pool or the filter Your PH shouldn't bounce around to much but old water will lose its buffers. When you top your pool up check the tap water for the PH Balance to see if you are raising or lowering it by adding water. A high PH is obtained by adding chemicals to do just that but the area you live in might have very alkaline water which would cause that to be high.
Normal pH levels are between 7.2 and 7.6 Too far above or below and the chemisrty used in the pool will be less effective. Pool & Spa
You want your pH to be around 7.4. This can be done by using a pH decreaser or increaser product
Sodium carbonate (soda ash) or sodium bicarbonate (baking soda) are commonly used chemicals to increase the pH level in above-ground pools. It's important to follow the manufacturer's instructions and test the water regularly to ensure the pH is within the ideal range.
Algae, time for chlorine. Pool supply places have a test kit (ph) & can tell you how to use & what to add-chlorine or acid.
you need to purchase baking soda, they sell it at wal mart in 12lbs bags in the pool care section, this will keep your water clear and lower the PH
The proper pH level is around 7.4 to 7.6 If the pH is reading, 8 to 14 that would mean the pool has a high pH level. But if you have a low ph reading then your chlorine will dissipate quickly. To keep the swimmers in your pool comfortable and to keep your pool equipment in good shape, it is vital that the ph reading is balanced.
Add small amounts of muriatic acid until your test kit indicates that the pH is coming into the range required which is 7.6 -7.8 ppm.
The relationship between pH and alkalinity in maintaining proper water balance in a pool is that they are interconnected. pH measures the acidity or basicity of the water, while alkalinity measures the water's ability to resist changes in pH. Proper alkalinity levels help stabilize pH, ensuring it stays within the ideal range for pool water. This balance is crucial for water clarity, swimmer comfort, and the effectiveness of pool chemicals.
Any time you like.