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Remove some water in container (10-20%) and add new water. example: pump water high in cyanuric acid out of a swimming pool and the add fresh water to the pool.
Add acid
acid is added to a pool when alkalinity is too high. Take a sample of pool water to your pool shop and have it tested by them. they will tell you what is required.
Reduces alkalinity of swimming pool water (softens hard water)
Yes, you are supposed to add it while there is water in the pool. Add with filter running near a return line. Add it slowly and if possible, brush the pool to help mix the acid. You can swim within 30-60 minutes.
use either muriatic acid or dry acid (sodium bisulfate)
you have to aid a conditioner or stabilizer with cynaric acid in it.
yes but i recommend having your water tested by a professional first. They will tell you how much acid to add to your pool and the steps to take afterward. Most pool places test water free of charge.
Usually you would add muriatic acid to adjust the pools acid level.
Add potash. See your pool shop with a sample of your water and the size of your pool and he will give you what your pool requires.
you add acid to water
This will depend upon whether you have a plaster finish or not. First test the water to determine if you, in fact, need to add acid. If the test indicates that you need acid start with small quantities. Maybe one to two cups of acid. You don't have a lot of water to deal with here and so you could bring the water to acidic conditions easily. Wait about 20 min. for the circulation to distribute and test again. If the demand for acid is still there then you did not add enough acid and will need to add more. Continue this until you reach the goal of about 7.6. Test again the next day to see if the pH has stabilized. If so, then that total amount of acid that you added was what the pool demanded at that time. Each time most likely will be different. A vinyl lined pool can usually have a lesser demand for acid. Ken