try CLR. it can be bought at any grocery or home improvement store
empty the tub and follow the directions on the bottle.
You make it too hot and melting the fat.
1. Superchlorinate to get rid of bacteria 2. Use a decalcifier or Swirl Away
It could be a few things, Alkalinity, high PH, Calcium deposits or skin and oils. Test the water to determine if PH and Alk. are in the correct parameters first. If Calcium is too high it will leave the deposits but most of the time the filter isn't able to remove all of the skin and oils that we lose from the epidermis quickly enough and they stick to the shell.
No. Calcium deposits are not alive/ However, deposits of calcium carbonate are often made of the shells of once living, but long ded organisms.
No.
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.
What about "pool chemicals in a hot tub"?
for a luxury hot tub it is 15,000
Is more water comming out your tub spout? if so change spout
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.
Hot tub cover prices usually depend on the type of hot tub that you own. Hot tub cover prices can range between $100 to $400. It also depends on your income to decide if a hot tub cover is too expensive.