E18 – of the Pool Nation Podcast we talk to Bob Lowry in his monthly visit to the Pool Nation Podcast to talk about swimming pool water chemistry and answer pool guys questions. We talk about how to treat black algae, we discuss Galvanic Corrosion, we talk to Bob about what causes foaming in swimming pools, and an in-depth conversation about UV, Ozone & AOP. We discuss the importance of keeping a residual amount of chlorine in the water to protect bather to bather transmission of diseases.