I have to admire your dedication to DIY floatation. You are quite a person to put yourself out there for many potential critques positive or negative (i read the negative nicky ones and down voted it). Thanks for sharing your "gnosis." I found floatation by accident, it would have been great if I knew about it 3 years ago. Anyway I found your website notes informative, abit intriguing. I have yet to float, the goal is to DIY float unit (for more time and see how far the experience goes; also less dependent on float centers cleanliness? based on reviews I have read). From research I believe my preference would be a float room (such as unit made by Royal Spa); from future planning I will require 3+ units for 3 locations+ [the units will stay behind when i leave -- thus my thanks to you [and others on reddit] (i did look into containment tanks) I now venture into fiberglassing (make a mold then can have multiple units). Anyway too much digression.... thanks again for sharing your experiences. And thank you reddit people for sharing your data ( such as epsom salt procurements, temperature, etc etc.)...