At the pool, see if your kids can guesstimate the number of gallons of water that the pool holds. Show them one gallon by pouring four four-cup measuring cups of water into a bucket. Then while they swim, they will be thinking about that bucket and how many of them it would take to fill the pool. Ask the management to give you the answer – they should know how many fire department pumper trucks it takes to fill the pool for the season!

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What a clever idea. Natural Pools NZ, Eco-friendly natural swimming pools free of chemicals, naturally filtered

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How the natural swimming pool filtration system works. Chemical-free, maintenance-free (other than weeding I guess).

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natural swimming pool really lovely. idk how the plants deal with the pool water chemicals, but it sure does look pretty.

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