While I'm trying to figure out what's going on with my other tank (no more deaths-everything looks good!) I have a 5 gallon hex tank setup sitting in the garage. I'm thinking of setting it up in my room for something to look at, hehe. Do you think some fancy guppies would be a good idea? How many, 4 or 5? I don't know too much about them...but they are colorfully wonderful for a small tank. What do you think?