Basic Pool Chemistry 101

from Swim University

Swimming pool chemistry can be a mystery to even the most seasoned swimming pool professionals.  Things like chlorine demand, phosphate levels, and bio film can make the hair of experienced swimming pool professionals stand on end.  It is no wonder then that the average swimming pool owner sometimes can get into trouble keeping their swimming pool water balanced.  This post from Matt Giovanisci from Swim University explains the most basic forms of swimming pool chemistry, and gives a no nonsense guide to keeping the Langlier Index in balance.

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Water Chemistry

From 1 Stop Pool Pros

It's easy to assume that a swimming pool is "set it and forget it", but that really is not the case.  Anyone familiar with swimming pool water chemistry understands that to achieve balanced, healthy water, one needs to understand the differing measurable components of the water saturation index.  The important levels of pH, Alkalinity, Hardness, Temperature and Free Available Chlorine are all integral to achieving a safe, sanitary swimming pool environment.  This post from 1 Stop Pool Pros gives a good primer on the different chemicals that are utilized to achieve balanced water in these important areas.

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Chlorine: The Cause of Irritated Eyes of Swimmers?

From Healthy Pools

The most common misconception surrounding swimming pools is the cause for the "Chlorine" smell, eye and skin irritation, and skin disorders.  A properly chlorinated pool will not smell, will not irritate eyes, and will not be a catalyst for spreading disease.  The concept, simply put, is that chlorine has three distinct components that determine it's killing capacity:  Total Chlorine, Free Chlorine, and Combined Chlorine.  Combined Chlorine is the culprit, and is caused by the chemical reaction that occurs when chlorine actually does it's job.  This post from Healthy Pools expounds on this concept, and busts an often perpetrated urban legend around chlorine and swimming pools.

Here is an excerpt from the post: