Water Testing

Transitioning From Opening to Mid-Season Pool Care

As summer heats up, so does pool water — and without adjusting for temperature swings, your chemistry can quickly fall out of balance.

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Just the Facts: Legionellosis, Legionnaires' Disease and Pontiac Fever

Methods to avoid exposure to Legionellosis, Legionnaires' Disease and Pontiac Fever, as well as what to do during an outbreak.

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Radio Waves Clean Pools

New technology causes particles to clump and floc, supercharging filtration and helping keep pool water pristine.

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Just Above the Waterline

Deposits are not the result of chemical imbalance, but simple evaporation.

The white deposit just above the waterline in this photo is primarily the result of simple evaporation.

Drain Saver Pool Chemistry

The way we approach CyA, TDS and calcium can conserve water and ease drought conditions.

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How to Get Algae to Give Your Pool a Bad Review

Algae control in swimming pools demands a multifaceted approach.

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Test the Water

Regular, repeated water testing is the most important safety precaution that pool operators can take to prevent RWIs.

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Spa vs Pool Chemistry

A spa is not a small swimming pool. Reactions happen faster in warmer water, placing even more dependence on the need to maintain sanitizer levels.

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Research Update: CYA Removal Method Confirmed

A new method of CYA removal has been confirmed with a helpful bonus — it also aids in black algae reduction.

In some trials, black algae literally detached from pool walls to be vacuumed up with debris.

Ask Jenn and Roy: Your Water Care Questions, Answered

In the spirit of investigation and pool chemistry education, we enlisted two top experts in the field, Roy Vore and Jenn Huang, to look at real life pool care problems.

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Testing Methods and Backyard Connectivity

Industry professionals can remember how simplistic our water testing products were years ago — but that's now in the past.

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Rain, Explained

What happens to a swimming pool when it rains? The answer is complicated, but understanding some of the basics can make maintenance easier.

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