1. Superchlorinate to get rid of bacteria
2. Use a decalcifier or Swirl Away
There are several commercial products available that you can run in a hot tub to get rid of the buildup in the pipes.
Yes, unless you "winterize" it by blowing the pipes free of water before the cold sets in. You should research exactly how to do this on a hot tub website like the one below
To remove lime buildup from hot tub pipes, you can use a solution of white vinegar or a commercial descaling agent. First, drain the hot tub and then fill it with water mixed with the descaling solution. Run the jets for about 30 minutes to circulate the mixture through the pipes, then drain the tub again. Finally, rinse the pipes thoroughly with clean water to remove any remaining residue.
NO, it will not freeze.
You make it too hot and melting the fat.
Install anti-hammer arrestor in hot water line at tub. It should help.
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.
try CLR. it can be bought at any grocery or home improvement store empty the tub and follow the directions on the bottle.
Hot tub plumbing diagrams typically include components such as pumps, filters, heaters, jets, and pipes. The layout shows how these components are connected and the flow of water through the system. Pipes are used to transport water to and from the various components, with valves and fittings controlling the direction and pressure of the water. The diagram also indicates the location of the equipment and how they are interconnected to ensure proper functioning of the hot tub system.
The back of the bathtub typically stays colder because it is farther away from the direction of the hot water flow from the faucet. Heat dissipates as it spreads across the surface of the tub, so areas further from the source of the hot water will feel colder.
It's probably the original bath and the steel pipes are corroded and leaving mineral deposits in that bath. Other pipes may have been replaced.
All of the above. Mineral deposits form on all piping and water appliances.