<blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr>Originally posted by pendulum:
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I wouldn't recommend everyone to keep a tang in a 20 gallon tank. I had a very stable and established aquarium and thought it would do fine.
I would bet a 50 gallon tank would be fine if it was well established and stable.
good luck</strong><hr></blockquote>
Dude, just stability alone isn't going to help out the tang in the swimming dept. I'm going to assume that it's a 20l (30" long), which is really really small for any kind of energetic fish like tangs. Stability's good, but I could also have a 5 quart plastic jug w/ a 20 cubic foot wet/dry filter underneath, it would be incredibly stable, but doesn't make it right to stick a tang in it. I'd say 4' minimum tank length for tangs. 20 is a ridiculous sized tank choice for a tang, I hope it's a very small fish.