http://www2.towerhobbies.com/cgi-bin...?&I=LXGPD6&P=0

I just bought one of these just for the heck of it, and I have been running it in my 29 gallon fish tank. It is actually a pretty cool little sub. The fish don't seem to mind it at all, and when I turn the aquarium light out, the sub has little forward lights and it pretty bright. It's a lot of fun. It would make a great stocking stuffer for any R/C fan. Just a little heads up on a neat little toy.