Last week was my husband’s birthday. John is many things—painter, graphic designer, musician. He’s an amazing guitarist. For his birthday this year, I wanted to get him something with a music theme. When I discovered that one of the city’s spas was offering a Pink Floyd float, it seemed like the perfect gift. I’ve done one other float at a different studio. Floatation therapy involves lying in 1000 lbs of Epsom saltwater in a tank. Similar to massage or other healing therapies, it’s meant to  re...