Was in a Walmart yesterday and checked out Tetra's 3g LED Cube Kit. It's a pretty good deal if you get it on line (still more than $30 at the store). Comes with a pretty good (and aftermarket replacements avail) LED although only white...no blue. On/off switch for light, separate light and filter cords (no joined transformer) feeding hole, clear lid, room for heater cords, etc. Even comes with a small air pump and a Whisper Tetra filter that can be easily converted from buy Tetra filters to use floss and sponge/biomedia.
I sound like I'm in sales....but here's the part that gets me. Right on the side of the box are their "Recommended fish options". And for coldwater fish (64-70 degrees) they list goldfish and....wait for it.....betta!
Sorry for ranting if this is old news. But if it is
old news why don't they fix it?