I use a wonderful 3 gallon totally glass (no ribs) rectanglular picotope tank which came complete with a small picco filter and a light. My guy seems very happy with it. Me, too. I had to order it mail order through some of the catalogs (whose names have slipped my mind right now). I've also forgotten how to get a picture of it that I have in my phone onto this site. If I figure it out, I'll send it!
Forgot to say: Only problm is there's no lid, which only causes a problem because the water evaporates so fast. I'm looking into different glass covers in catalogs, but there's no ventilation....