Salary. The Bureau of Labor Statistics reports that marketing managers in the United States earned an average annual wage of $126,190 as of May 2011. The median wage, or midway point between the lowest and highest salary, was $116,010 per year.
What is TDS. TDS is the total of all dissolved solid matter such as minerals, metals, salts and. contaminants in the water. B. How TDS is Determined. TDS is most often determined in pool and spa water by using a conductivity meter. These. electronic meters measure the waters' ability to conduct an electric current.
There is no significant product to reduce the total dissolved solids in pool water. The most common and easiest solution is to drain a portion of pool water and fill up it with the fresh water. How amount of water should to be drain, it depends on the pool TDS level. It may be partially or totally.