We are a 5 tank Floatation Centre on the west side of Toronto. A float tank (also called an isolation tank or sensory deprivation tank) is essentially the perfect bath tub. They vary in size, but the typical tank is 8′ long and 4.5′ wide. Air is allowed to freely flow in and out, and the door never locks or latches.
It holds about 11″ of water, which is saturated with 1000 pounds of Epsom salt. This creates a solution more buoyant than the Dead Sea, and you float on your back about half in and half out of the water.
The water itself is kept at the average skin temperature (93.5° F), which allows you to lose track of your body. The tank is sound proof and, when you turn off the light, completely dark.
No gravity, no touch, no sight, and no sound. Just pure nothing. Its likely to be one of the most relaxing things you've ever experienced.