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To say my estimate, I would say 6,000 gallons or more of water can fill up a whole swimming pool. I have an underground pool myself, and I've seen that It takes a pretty long time to get filled with the hose. I also believe it depends on how big the pool is. Ex. Small: 2,000 gal. Small: 2,000. Medium: 3,000. Large: 6,000. I have a large pool. Extra Answer: How many bathtubs can fill an underground pool? I would say about...well, how big is your bathtub? It would take about 7 gallons to fill a small tub, 10 to fill a medium, and a large would be 15. So, depends on size. Large would be 1,000 bathtubs, medium would be 900, and small would be about 800. Thanks for listening to me! To know I answered, look for Extra Answers under the regular ones. Thanks again!

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17y ago

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