I bought one a while back on ebay from a guy who was trying to get his business known.
It is a 60 gallon half-circle, acrylic, completely open top.......I'm sorry to say it is still in the crate it was shipped to me in, after I water tested it. Looking at it, I wondered the same thing about cleaning it. Just get a huge clean up crew, put one of the cleaning pads on a piece of PVC and DIY a cleaner.
dippin61....it is not quite a bow front, but more of a half-circle. Mine is about 4 feet long, and the front makes a complete half circle meeting both ends of the back. I am pretty sure this is what he is talking about.