A girl stands on a grass covered field and paved sidewalk and performs several gymnastic flips and cheerleading moves. the girl

then returns to the grass and does several more advanced backflips.

A man is seen sitting on a camel followed by getting off and another man climbing on. The man then leads the other around on the camel. the man

stops the camel and gets the other person off while climbing back on.

A man rides a motorcycle into a parking spot. He gets off the bike, and shows how to clean a large window. he

wipes it down and scrapes it clean with brushes.

How to add hot tub chemicals
Test your water's total alkalinity.
When you fill up your hot tub you need to check the alkalinity of the water. You may even want to repeat this twice per week.
The goal is to establish how alkaline your water is. This needs to stay between 80 and 120ppm.