I knew a guy who was from the Phillippines, he had a place right next to the water, and he'd do all the water changes, I think at one time he contemplating running a pump to the ocean right to his tank just to do continuous water changes. He dove and collected his own fish and corals, but the one thing he did is if he did something "bad" (you mean I can't have this shark in a 30 gallon tank?) he tried to rectify by putting it back.
Who hasn't put ANY tang in a tank less than 50g? Not many can say I, that's not the point. My problem was that he starts out "I want to do this as cheap as possible", and he's unemployed, to me it seems that priorities are in order for him.
Although I wonder what $2 buys in Indonesia? Maybe $2 is the equivalent of $50 here? In which case that "$2" tang isn't that cheap.