I don't buy from there, but it all depends, some are better then others. If there one particular store you will go to, i would go by from time to time and see how there tanks look. Checking to see how they maintain there tanks, check if you see dead fish and whether they leave them in there. and to check and see if you see fish sick there like with ick. And if you feel comfortable with what you see, then go for it.is it bad to buy fish and corals from there?