I go to Pets At Home occaionaly for hardware and food. Last time I was there, as all the tanks share a single filtration system (well the tropicals and coldwater are seperated but they are otherwise connected), all the tropical fish (except the cories) had ich. It was terrible. Actualy, I also got into a light argument with one employee... I heard her talking about 'fish growing to the size of the tank' so I asked her afterwards how many of this fish (pointing at some young three-spot gouramies) she'd put in a 20 gallon. She asked me what I had already and I made something up. She says '3'. 'Ok' I say - 'what about these?' (pointing at three-spots in a larger tank that were older). 'None' she says. 'Why? They are the same species aren't they?'... 'Yes' she says 'but the small ones here won't grow as big as those because fish only grow to the size of the tank'. I tried to explain this wasn't true and why this myth exists to begin with but I think she took offense and ignored what I told her. She started saying something about her having 'qualifications' and whether I do

Anyway, that's just the most recent incident - I'm always hearing them giving very stupid advice and, occasionaly, i bother to correct them. it's hopeless though realy. I've also seen some horrible cases of disease in their tanks as well as some mis-labelled fish. Anyway, you can't expect much more from pet chain stores. At least they are relatively cheap when it comes to equipment.