Algae in your swimming pool can be the most aggravating part of owning one. We often get the question "how do I get rid of algae". First you have to find the source. Algae can enter your swimming pool through wind, rain, or people entering your swimming pool. Combined with poor circulation, the algae can thrive and grow in your swimming pool. At this point though you probably are not worried about how the algae got there, but rather how to get rid of pool algae.