Can you create a swimming pond without plants in it?

In this video, Michael from Ponds by Michael discusses the possibility of creating a swimming pond without plants.
He explains that unlike traditional swimming pools which rely on chemicals like chlorine for clarity, his company's swimming ponds achieve crystal-clear water through a comprehensive system that includes water testing, management of GH, KH, and carbonate hardness, oxygen and phosphate management, nitrogen cycle control, and UV treatment. Michael emphasizes that plants are not necessary for filtration, but rather they absorb nutrients from the water. His passion for water chemistry and delivering clear, chemical-free swimming ponds is evident as he shares his expertise and the benefits of their unique approach.