#format wiki
#language en
= Pool maintenace =
 * Notes on maintaining a chlorine pool.

== Chemical's ==
 * Links [[http://www.troublefreepool.com/calc.html|Pool Math]]
 * '''Chlorine(CH)''' - the bug killer
   * maintain the appropriate free chlorine (FC) level at all times
 * '''Cyanauric acid(CYA)''' - a.k.a. the stabilize , protect the chlorine from the sun
   * To much CYA makes the chlorine in effective.
   * [[http://www.troublefreepool.com/content/128-chlorine-cya-chart-slam-shock|CYA-Chlorine]] chart.
   * You can add CYA, but not remove it, the only way to lower the concentration is to replace water
   * Most Chlorine floaters that are stabilized, adds CYA to the water, CYA thus just keeps building up, until you backwash and replace some water.
     * Note: Dichlor and trichlor add CYA and lower pH. Cal-hypo adds CH.
 * '''Ph''' - This is the Acidity(low Ph) or Alkalinity(high Ph) level.
   * Try and keep this in the 7.2-7.6 range to allow Chlorine to work effectively, and protect pool from corrosion.
 * calcium hardness (CH) level of your water.

== Filter ==
 * Sandfilter
   * Catches big particles in sand layer, removing them from the water.
   * A lot of things i the water is so small it goes right through the filter e.g. Algea etc.  


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