Swimming Pool Blog

- Water Balance
  • Total Alkalinity in Swimming Pools
    Rob Cox
    swimming pool total alkalinityA close cousin of pH, the level of alkalinity in the water is a measurement of all carbonates, bicarbonates, hydroxides, and other alkaline substances found in the pool water.  pH is alkaline dependent; that is, alkalinity can be defined as the ability of the water to resist changes in pH.  Also known as the buffering capacity of the water, alkalinity keeps the pH from "bouncing" all over the place. 
    Saturday, March 06, 2010 11:40 AM
  • TDS ~ Total Dissolved Solids
    Remember that science experiment when you were a kid? Keep pouring and stirring sugar (or salt) into a glass of water, and eventually it will stop dissolving - this happens when the water reaches it's saturation point. The TDS gets too high - this can happen in your swimming pool, too. Total Dissolved Solids (TDS) is the measurement of any dissolved solid in a liquid.
    Friday, February 19, 2010 2:24 PM
  • The Saturation Index ~ What is it?
    Swimming pool and spa water chemistry is no doubt a science that can become very involved and somewhat complex. The LSI and the modified Hamilton Saturation Index are not guaranteed; however, some readings for pH, calcium, and alkalinity which, if taken individually would be considered to be well beyond recommendations, can combine within the formula to produce "balanced water." 
    Wednesday, January 20, 2010 4:19 PM
  • Calcium Hardness in Swimming Pools
    Rob Cox
    calcium chlorideCalcium Chloride is a very useful compound. Once taken as a tonic for the sick and infirmed, it also serves as an excellant de-icer. Many commercial ice and snow melting chemicals are a form of Calcium Chloride. Pellets tend to work better than flakes for this purpose. But Calcium Hardness in swimming pools, that is our focus for this first article of four on your pool's water balance.

    Tuesday, January 05, 2010 7:49 AM
  • Swimming Pool pH and Total Alkalinity ~ Kissing Cousins!
    Total Alkalinity and pH ~ close cousins I always say. Kissing Cousins. They are both measures of the relative acidity or basicity of your pool water. Keeping these cousins in line is important for bather skin and eye comfort, as well as for the care of your pool surfaces. Good levels also help keep your chlorine working most effectively. At higher levels, chlorine becomes very sluggish.
    Tuesday, April 14, 2009 4:23 PM
  • Frozen Pool Test Kit Reagents?
    “How long is the shelf life on my test reagents” is one of the most common questions we hear. There really is no definite answer to that question. Some test kit reagents have an unlimited shelf life. Other reagents need to be discarded after a certain amount of time.
    Friday, December 12, 2008 2:00 PM