Sensory Deprivation Tank Bangor Float 207. A sensory deprivation tank, also called an isolation tank or most commonly known as floatation tank, is used for restricted environmental stimulation therapy (REST). It's a dark, soundproof tank that holds just about one foot of water and has over 1,200 lbs of epsom salt dissolved inside. This allows you to effortlessly float in water that is 93.5 degrees which is skin-receptor neutral. You'll have the unique experience of weightlessness; not sensing where the air stops and the water begins on your body. You have the opportunity for lights and music, although true sensory deprivation is one without. Floating has proven to help reduce anxiety, lower stress, and aid those who suffer from PTSD. This permits the body and mind to enter theta state. Theta state is one of very deep relaxation; the brain waves are slowed down to a frequency of 4-7 cycles per second. Our sessions are 90 minutes long, giving you plenty of time to unwind and recharge!