Natural Pools: Myth vs Reality, PART lll

Talking Pools Podcast

this conversation is between Rudy, Allen Schnaak, Andrea (The Pool Girl), and Frank Disher (The Deep End Podcast) , discussing various topics related to natural swimming pools, chemical treatments, biofilms, and pool maintenance. Here's a summary of the key points discussed:

1. Natural Pool Design vs. Chemical Pools:
   • Allen Schnaak discusses the design and benefits of natural pools, highlighting their self-supporting and less chemically intensive nature compared to traditional chemical pools.
2. Biofilm and Filtration:
   • The conversation delves into the importance of biofilm in natural pools, which aids in filtration and nutrient sequestration.
   • They discuss the sizes of particulates caught by filters, with Allen mentioning gravel filtration with a large surface area for biofilm development.
3. Concerns About Pathogens:
   • Rudy brings up concerns about pathogens like cryptosporidium and asks about their removal and monitoring in natural pools.
   • Allen explains that while one cryptosporidium may not be harmful, the concern arises with excessive quantities, emphasizing the need for monitoring and filtration.
4. Control of Biofilms:
   • Rudy expresses concerns about different types of biofilms, some of which can secrete toxins. He asks about controlling the type of biofilm in the pool.
   • Allen explains that the design, flow rate, and nutrient levels are managed to encourage beneficial biofilms and discourage harmful ones.
5. Maintenance and Cleaning:
   • Andrea asks about maintenance practices for natural pools, to which Allen emphasizes the importance of regular cleaning and brushing.
   • They also discuss the presence of different types of biofilms and how they can be managed through

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