Del - I don't wanna be a prick, but you simply can't deny being a hypocrite.
If you cared for your fish as much as you claim to, and feel your tank is too small now for your aro, you'd find a way to get a bigger tank. Sell your existing one and get a tank 30/36 inches wide. If you don't have the money for an upgrade even after selling your existing tank, then get a part time job and save the money, or sell your arse in SF on the weekends.
Look at steve, he is younger than you and he's just got a 600g, and I'm pretty sure it's with his own money.
Knowing that I could not buy a big tank in Spain, I transported a 190 all glass tank from England to Spain on a lorry, and carried it up 3 flights of stairs to this appartment. You do what you have to.
The 3 big fish I have, Cuban gar, aro and cobra snakehead are going to outgrow this tank in a couple of years, I'll make sure I get a bigger tank before then. If I am still in Spain and can't get a big acrylic tank made here, well I'll have to build an indoor pond.
You may not have known when you boguht the aro it would need a bigger tank, but it's safe to say you;'ve known for a while right? You've had time to save some money if you wanted to, or even move out of your house.
There's no 2 ways about it, you're being a hypocrite when lecturing people about tank size.