WE purchased a fish tank for my daughter for her birthday from petco along with a couple of fish. Much to her dissapointment the fish died within a week or so of being in her new tank. Petco has a wonderful return policy on fish, so we where able to take them back and they tested our water, made recommendations and refunded us the money from our previous purchase. The staff are very knowledgeable. Only down side is some products on petco website are not available in their store.