Back in November I had an issue with a hex. 5 gallon aquarium that I picked up at a yard sale for a dollar, if you go on the Petsmart website it's the aquascene 5 type tank. Well my issue was that I had no light for the top and so I emailed topfin to see if they had any lights to fit on top of my tank and they said that they did not sell extra parts for their tanks and that I would have to go into Petsmart and exchange the tank since it had a lifetime warrantee. Thinking all I'd get would be a new tank, I took it in and told them about needing a light, they took my old 1.00 tank and gave me a brand new setup in the box that sells for around 39.00. Having another identical tank at home that I paid 1.00 at another yard sale I took it to the other petsmart around town and got my second 39.00 setup. So for me it will pay to look around for more small tanks at yard sales this spring and summer, and I am really surprised that Petsmart does stand by their product.