We usully go to both petco and petsmart for our fish tank needs. We recently got a clown loach from petco and today (about a week after we got him) we noticed it had ich extremely bad, and another one of our fish seemed to have the early stages. We returned to petco today and noticed the tank carrying the clown loaches had ich. a few other tanks did as well. We talked to the employee and he said that he didn't notice it and that all the tanks had the same water supply, meaning, if one tank had it all the fish could be infected. After he finished talking to us he went to sell fish to a family. THEIR FISH INFECTED OUR TANK WITH ICH, AND THEY ARE STILL SELLING FISH WHEN THEY KNOW THEY HAVE ICH. Not to mention they only have 3 employees working at once, so you have to search for one to even get this fish. We will never return to a petco again.