Is it safe to swim in hot spring?

If we have a gunite pool with spa and calcium deposits have formed in spa only what is best way to remove the calcium scale? How much electricity does a pool heat pump use? Why is my period early and like water? How much do above-ground swimming pools cost, on average? Who invented the water powered loom in 1787? How do you change clothing on billabong surf trip? What is the difference between a diving wetsuit and a surfing wetsuit? How tight are girl's one-piece swimsuit supposed to be? On an old three-knobbed shower how do you get the middle knob off for the shower if you don't have any water coming out of your showerhead and need to get this off? How much water is used in a bath? Is the word water a long vowel sound? What brand of headphones is Michael Phelps wearing? Why did the mayor join the rowing team? What are the pros and cons of an ecosmart pool system? What would cause loss of water pressure when pump kicks on after only 5 minutes of water use even after replacing jet pump pressure tank and switch? What is electricity made by water called? Im taking care of a friends pool while they are gone and it turned green yesterday and all I have is liquid chlorine and a fliter AND you need to get it cleaned before they get back HELP? Is Poseidon fesred or respected? You begin Water Polo in 2 weeks and you wear contacts What can you do to see in the water since goggles are banned and contacts are unsafe? Do you need a pump and filter for your 10 X 30 pool that holds 1000 gallons of water?