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any hot tub/Science Fair experiment ideas??!!

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kervis:
My 6th grade daughter wants to do an optional Science Fair project in order to get even more extra credit that she does not need.  They are required to use the Scientific Method.

As I ordered more Taylor kit refills today, I got to thinking about any potential experiments that we (she) could do using the hot tub and chemicals.

We have searched many websites, but so many projects that are at her elementary/middle school level are so not interesting.

If anyone has an idea to share, that would be great!  Thanks!  :)

drewstar:
Magic Voodoo beads, signiuficant water sanitation, or jsut a cash cow for dealers?  ;)

thearm:
Maybe she could prove/disprove that age old question on full foam versus thermal for overall heat loss. Just find a tub w/o FF and borrow a Thermal imaging camera and get to work. Most volunteer and paid departments have these cameras and if asked nicely might be willing to help out on a project. Most are community oriented and are glad to get some good press. A local dealer in hut tubs might be able to help also if they have both kinds of tubs in the store.

Brewman:
I know- Put out a challenge to all spa manufacturers and offer to hook up their spas and run a test to see which one is most efficient.  Of course each participant would have to pay you at least $5000, plus they'd have to cover the cost of getting the spas to you and back, and all other related expenses.  
 The winner could be crowned king of the spas.  Think of the advertising leverage the winner would have.  

Vinny:
You can make your tub into a science project! I do it all the time.

Possibly the effects of bacteria on an untreated spa water and the benefits of chlorine.

Take a soak in the tub and take photos of the water as it ages and eventually gets clouded up. Dump a set amount of chlorine (say 6 PPM) and see how long it takes to clear up, maybe taking chlorine readings every 12 hours, taking photos.

Chlorine is the miracle drug of water purification and has wiped out a lot of diseases since it's use.

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