60 Second Docs on Instagram: "Are eco-friendly pond pools the future of swimming? David Butler of Norfolk @organicpools , England designs, builds, and teaches people to make their own DIY organic pools. The author of Natural Swimming Pools invented a sustainable swimming pond – a hybrid between a pond and a pool that’s safe to swim in (and drink from). Using only circulating water and no chemicals, Butler’s eco-pools are animal friendly, low-energy, and all natural. #sustainable #ponds #organic