When closing pools, the goal is to make the spring opening as smooth as possible. When it comes to keeping the water clean and clear, the industry knows the pool filter is key. Water treatment products help keep pools clean, but even chemical manufacturers agree, if the filter is not working properly, these products cannot provide clean and clear water alone. Keeping filters in tip-top shape will make pool openings much faster and easier for service professionals in the spring. To do so, it is important to get back to basics and review how sand, diatomaceous earth (DE), and cartridge filters work. More importantly, pool professionals need to remember how the pump feeds water into these filters. Understanding the relationship between the pump and filter gets to the heart of obtaining clean and clear water. Read full article here: https://www.poolspamarketing.com/general/how-to-winterize-filters-proper-pool-closing-methods-to-ensure-better-spring-openings/print/ By: Pool and Spa Marketing