Obviously the tanks are optimized for whatever it is they do (emulating senselessness?) but is it possible to emulate that?
How much epsom salt would you need and would it be cost-effective and safe to go down the drain relative to going out to an actual tank?
Please tell me it isn’t completely impractical and it could be done :)
If you want that sensory deprivation feeling, you have to control the air temperature as well and keep it in the dark, and it’s larger than a big tub. There is a company that makes a sensory deprivation float tent that will sell you all of the parts and salt. I looked into it a bit after enjoying my local float place. Maintaining the filters, the pH and dealing with the hundreds of pounds of salt seems like more trouble than it’s worth.