Author: Terry Arko

Terry Arko has more than 30 years of experience in the pool and spa/hot tub industry, working in service, repair, retail sales, chemical manufacturing, customer service, sales and product development. Arko is currently the product training content manager for HASA, a manufacturer of liquid pool sanitizer and swimming pool and spa treatment products, a CPO instructor and member of the PHTA’s recreational water quality committee.
  • In Memoriam

    The pool industry lost an iconic figure on November 17, 2021. Bob Lowry, 75, was broadly known in the pool and hot tub world as an instructor, author and innovator of many specialty pool and spa chemicals. On the night of his passing, I was honored to accept on his behalf the Lifetime Achievement Award…

  • Liquid Chlorine

    Liquid chlorine has been around for a long time and is widely used in commercial and residential swimming pools. Technically speaking, the liquid chlorine used for pools is a chlorinating compound known as sodium hypochlorite. It is not pure liquid chlorine, but comprises liquid chlorine, water and sodium hydroxide. It may also be referred to…

  • Cleaning Up a Summer Swamp

    The last thing any pool owner wants is to have an algae outbreak during summer. Well-maintained pools should be free from algae; however, there are some things that can turn a maintained pool into a green menace at the height of swim season. Summer storms Rainstorms are notorious for bringing nitrogen into the atmosphere, which…