Water Quality

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    In the Zone

    Ozone can provide an effective supplementary disinfection system for swimming pools.

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    UV Uses

    Ultraviolet (UV)-generated ozone is an affordable option that’s becoming more popular for residential applications.

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    Which Filter is the Best

    When I was teaching filtration at technical schools and seminars throughout the country, I kept hearing the same question: “Which type of filter is best?” Attendees were not asking which manufacturer made the best filter, but rather which of t

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    Solving Stains

    Salt chlorine pools have become popular over the past few years.

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    Breaking Point

    The practice of overapplying chlorine is a serious problem that’s resulted in negative media coverage for commercial pools. Many techs assume so-called breakpoint chlorination eliminates chloramines, but actually it can exacerbate the problem.

  • Phosphate as a Buffer

    Phosphates have a negative association in the pool industry as algae enablers.

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    Defending Your Balance

    Alkalinity testing isn’t just another way to add cost and confusion to a service technician’s routine.

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    Buffer Charts

    Basically bicarbonate: Carbonate alkalinity is largely in bicarbonate form at normal pool pH ranges.

  • Turnover in Question

    In 1977, the National Sanitation Foundation published a standard for commercial pools to turn over water every eight hours.

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    Why UV?

    As frequent reports about recreational water illness and bacteria outbreaks mount, many commercial pool operators are choosing UV sanitation in order to comply with water quality testing parameters and state mandates.

  • Photo courtesy The Pool Doctor

    Dealing with Discoloration

    Perhaps the most common liner problem is discoloration.

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    Filter Sizing

    A good filtration system for a pool or spa depends on your ability to properly size and select the filter.

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    Basic Pool Water Tests

    Service techs can use three methods to measure chlorine residuals in pools:

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    Reading Water Tests

    Though you think you’re using the most accurate water-test kit available, it still may read incorrectly or differently than expected.


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