For more than a decade, Pool & Spa News has provided key insights from industry leaders in its column Technically Speaking. From issues with saltwater to filtration, pool and spa experts have regularly weighed in regarding some of the biggest challenges service technicians face in the field.

Whether you missed these the first time around or are like many others who simply want a refresher, you won't want to miss this round of the 10 most popular columns our readers have turned to in the last year, based on Google Analytics. They also happen to be among the top 50 articles accessed on our Website in the last year. In fact, the first on the list is the most read of any PSN article in the last year.

Some are old and date back to 2002, while others are more recent, but all still are relevant. Have a favorite not on the list? Let us know in the comments section below.

Solving the Saltwater pH Problem

Shining a Light on UV

Preventing Saltwater Problems

Borate Chemistry

Know Your Stains

Circuit Swap

Clear as Glass

Getting the Stains Out

Role Players

Acid Watch