That was my first thought too, slchurch. But then again...
How often do we try to reach a dream, fail, and think "man, I should never have even tried," versus how often we wistfully think of the path not taken and wish we had given it a go?
Yeah, probably the OP will have to scale things back. But maybe not. Maybe s/he will decide to set up a fish store instead of a fish house, so that s/he can make some money off the operation. Maybe s/he will win the lottery and be able to afford all the tanks s/he wants and a crew of tank-cleaning servants. Maybe s/he will find something else s/he loves even more and lose interest in fish altogether. Who knows?
Sometimes I think we tell ourselves that something can't be done so that we don't have to wrestle with the fact that we didn't try.
Not disagreeing with you, slchurch. Just sayin'... whatever it is you want, you might as well go for it.