The Acid Column Myth

– The following article is from Kim Skinner — part of the research team of onBalance.  I received this via email from Kim a few days ago.  Enjoy. __________________________________________________________________________ By Kim Skinner. Although onBalance debunked the Acid Column Myth in the Journal of the Swimming Pool and Spa Industry many years ago, we still regularly get asked in our trade show chemistry classes about its […]

The Acid Column Myth

Available Chlorine Content

On page 50 of our Pool & Spa Operator Handbook in chapter 5, there is an excellent chart that lists all the chlorine compounds and their respective characteristics/properties.  One of the properties listed is “Available Chlorine Content.”  You should remember that all chlorine compounds — namely, liquid chlorine, Trichor, Dichlor and such — are NOT created equal! The term “Available Chlorine Content” (ACC) was established to compare the potential […]

Available Chlorine Content

Lights Out In San Diego

We had a little surprise occur during our CPO class this past Thursday and Friday, September 8-9, at PoolCorp’s SCP store! At 3:45 p.m. on Thursday, the lights went out — literally.  The whole power grid went down in all of San Diego County and parts of Mexico and southern Orange County.   When the power went down in our classroom, there was no more projector, […]

Lights Out In San Diego

Total Alkalinity – What is it exactly?

There are several phrases and terms used to describe Total Alkalinity (TA): The buffering capacity of water Water’s ability to neutralize acid The pH stabilizer The ability of water to resist a change in pH A measure of the total of hydroxide ions (OH–), carbonate ions (CO3–) and bicarbonate ions (HCO3–) in water The pH anchor These are all correct.  As you know, TA is […]

Total Alkalinity - What is it exactly?

What changes the pH of pool water?

Just about everything that is added to the pool water will change the pH.  And anything that exits or is carried out of the water changes the pH.  Even the type of pool wall surface will affect the pH. Our Pool & Spa Operator Handbook lists a few things that affect the pH: the bathers the disinfectants we use the source water air-borne debris the water balance […]

What changes the pH of pool water?

pH Adjustment Dosage Charts

A swimming pool in optimium performing condition–one that is healthy and safe as possible–should be the goal of every Certified Pool Operator.  And keeping the pool water balanced is a key factor in achieving this goal.  Here’s the pool water chemistry parameter guidelines that we use — they are also on page 258 of the CPO handbook.  And here is the chemical adjustment guide — page 260 […]

pH Adjustment Dosage Charts