Since the purpose of a float tank is to eliminate sensory information, it needs to be big enough that you can float without touching any of the sides. Make sure you check the dimensions as well because many float tanks will not fit through a standard size door and conducting float tank sessions in your garage is not the best environment.

If the float tank is properly cleaned and the water filtered and sterilized between sessions you should be fine. The problem is that you can never be sure when visiting a float tank spa what their cleaning routine is—in which case, the float tank may only be as sanitary as the last person to use it before you. Bear in mind that draining a float tank, sterilizing and filtering the water, and then refilling the float tank can take several hours, so if the float tank spa you attend is scheduling back-to-back sessions, then you should be concerned.

If your hair is natural—i.e. it’s not colored or permed or keratin treated it should be fine. Salt is actually beneficial to natural hair as long as you thoroughly rinse it out after your session.

Float tanks are less dangerous than swimming pools because of the natural buoyancy provided by the super saturated salt solution they use. Some people even fall asleep while floating. That said, make sure you have a “spotter” who can supervise your float experience in case you run into any problems.

Float tanks work best when the water is as close to body temperature as possible (98.6° F). This is warmer than a swimming pool but cooler than a hot shower.

During a sensory deprivation or float tank session, you are disconnected from auditory, olfactory, gustatory and visual sensory stimulation. You are also disconnected from gravity due to the natural buoyancy of the floating solution—it’s similar to being weightless in outer space. This allows you to connect more deeply with your inner self and mind for an introspective experience.

Sensory deprivation has many beneficial effects. It can reduce tension and stress. It can improve your sleep quality. It can reduce your blood pressure. It can speed up your muscle recovery. It can help you meditate without trying. It can enhance your creativity. It can allow you to get in touch with your inner being which is fundamental for self-improvement.

The best results from a sensory deprivation tank float session come from floating in the nude. Some people choose to wear goggles and earplugs. If you normally wear these when swimming in a pool, then go ahead and use them.