No. It's essentially a Plumbing fixture.
Any hot tub can be sanitized with cholrine-free treatments. Hot Tub Silver is one such product.
None. You use a,product made for hot tubs.
Hot tub enclosures can be purchased from many online stores. Some of the internet stores which sell this type of product are Outdoor Living Ltd., Hot Tub Barn and Arctic Spas UK.
Hot tub chemicals are for the most part perfectly safe for the human body. The main chemical used is a chlorine product. It is safer the be exposed to chlorinated water in a hot tub, than it is to dirty hot tub water that has not been properly cleaned. The heat from a hot tub can make nasty organisms grow very quickly. There are also natural hot tubs, please see the following link for more information www.ahhnatural.com
dog sh*t
THE HOT TUB IS TO RELAX
You use a hot tub cover after the hot tub has cooled off. Using it while your hot tub is still warm can cause your cover to break.
To get the best hot tub for you, you should contact&dealers that specialize in selling and installing hot tubs and compare their product specifications.
What about "pool chemicals in a hot tub"?
for a luxury hot tub it is 15,000
Hot tub covers can have long lives if they are cared for properly. Hot tub covers are mostly affected by dirt and sunlight so keep it clean and perhaps put a tarp over it if the hot tub is in direct sunlight.