The recipe for floatation therapy, or sensory deprivation therapy as it's also known, requires three things: a 7-foot tank, enough water to create a 10-inch buffer between the floater and the tank's bottom, and 1,000 pounds of magnesium sulfate. The purpose of using all of that magnesium sulfate isn't to get rid of that eyesore of a magnesium sulfate mountain. It's to densify the water, which, similar to the water of the Dead Sea, allows people to float on it. The process is common knowledge to the staff at Float Good, who specialize in the relaxing therapy. Each 60- to 90-minute session can help reduce stress, alleviate magnesium deficiency, and improve conditions such as anxiety.