If you have a sand filter for your swimming pool, you may wonder how often the sand inside it needs to be replaced. As a general guide, pool filter sand should usually be changed every 3–5 years, although this can vary depending on how often your pool is used and ...

A green swimming pool is usually a sign that the water chemistry is out of balance — most commonly because there isn’t enough chlorine to control algae. In the Helderberg, warm weather, sunlight, dust and debris can all contribute to algae growth. Even a pool that looks clean can quickly ...