Nippy thanks for the info, though I don't understand why I wouldn't put a Pleco in with them, in fact many of mine do a WONDEFFUL job of cleaning up waste and algae. I'm glad to see everyone has had such positive experiences keeping pairs. If the pair doesn't work out, it's not the end of the world. I had quite a bit of that happening when I had a silver-tipped shark and other fish kept mysteriously disappearing.

As far as water changes goes, I am definetly used to it. I do them at least with the 75 gallon each week to keep the Discus happy.

I think I'd like to have one tiger, one albino, a pleco, and one or two interesting bottom feeders -- perhaps a spiny cat, since they eat fish waste, and there was a really cool catfish like HUGE bottom feeder I saw at my lfs, I can't remember what it was called, but apparently they have the potential to grow to the size allowed, so many people keep them in ponds. They were black and light orange, and had a high dorsal fin. Anyone??