Zfunk, they had UG filters in the fiftees, I always had one. I also had fish in the fortees but being a baby I probably did not know it.
As for bashing people for keeping Idols or any other kind of fish, the last time I looked, this was a free country and you can keep any kind of fish in any size tank in any kind of conditions. We may not think it is ethical, moral, or envirnmentally sound but I keep my opinions to myself when talking to an American. I have my own opinions about it. I also eat fish almost every day and I know that for every fish I eat there are hundreds of pounds of "trash" fish that get discarded. I still eat fish. If you do any traveling to the Caribbean or any Polynesian islands when you get away from the tourest areas you will see people with nets catching Idols, lookdowns, tangs, morays and any other kind of fish that they can to eat or sell. The majority of them just die in the sand to be eaten by crabs. I have seen this many times, it's life and I think many more fish are killed that way than you think.
Anyway, this is a moorish Idol thread so I don't know why I got off on this, sorry.
Have a great day.
Paul