Reef parameters should matter at my local Petco. Westminster MD. They almost always have a few softies in stock. Some nems on occasion too. Their fish livestock however, almost always looks horrible. I was there yesterday and they had an amazing looking firefish and a juvenile flame angel. Both were in super condition. I wanted them badly, but didn't buy them. The tank next to them had one dead and one very much almost dead maroon clowns. The tank above held a very emaciated yellow tang and another tank had a foxface that appeared to drunk. There's always death in those tanks. (At least at this store) very sad.