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is guardex pH increaser compatible with bacquacil
Your pool water turned green immediately after adding pH Plus because the chemical had increased the pH level to high. You may need to adjust the alkalinity levels of the water using another pool chemical such as pH Minus of pH Alkalinity Plus.
No - Alkaline is on the high end of the pH scale, acidic is on the low end of the pH scale. Use a pH decreaser to lower the alkaline levels.
You want your pH to be around 7.4. This can be done by using a pH decreaser or increaser product
You can use soda ash (sodium carbonate), sold as pH Increaser, pH UP or Arm & Hammer Washing soda. You can also use borax, sold as 20 Mule Team Borax. Sodium bicarbonate, sold as baking soda, Alkalinity Increaser or Alk Up, will raise pool pH levels, but not very efficiently.
You should wait a couple of hours before swimming in a pool after adding PH minus. Check your water before swimming to ensure that the PH has been lowered.
Small amounts of the chemical Sodium Carbonate, available at your local pool store usually packaged under a name like pH up or pH increaser.
A lower pH will erode a copper heat exchanger in a heater very quickly. I will also then, increase the copper level in the pool water and will make it difficult to add pH increaser or TA increaser. Both chemicals will stay out of solution. Once they do deslove the copper drops out and the will stain the liner black. The best solution is to keep an eye on your pH especially when you have a heater.
Adding an acid to a solution will lower it's Ph, but adding a base will raise it's Ph.
High Alkalinity will keep your pool water on the higher end of the pH scale, or more basic rather than acidic. High Alkalinity is not terrible but there are two things that can happen. If the water is constantly basic a "scale" can develop. The other thing that can happen is you will notice your pool will get cloudy when you add pH increaser, alkalinity increaser or calcium hardness increaser when either one of those three are on the high side already.
Soda ash (sodium carbonate), sold as pH Increaser, pH UP or Arm & Hammer Washing soda, will do the trick. You can also use borax, sold as 20 Mule Team Borax.
Alkalinity should be maintained between 80-120 ppm to act as a buffer for pH. Without the buffer effect your pH would have more frequent and wider changes.