That's too bad. I've always used tap water, not sure what to tell you. Why can't you use it? Is it well water? I know at a water place by me you can buy fish water for 2 bucks a bottle (it's a big bottle like for a water cooler) as well the API liquid test kit is the best, most accurate. It's all I've ever used and seems to be what most the pros use on here (from what I've read). As for petsmart there's been a few conversations on here about big chain stores and how they care for their animals and such. I don't get my fish there so I can't judge, but I think alot of people would agree that their fish aren't the best
. I get all my fish from Big Als, love that place!