planet is coming out to inspect it Saturday. im hoping for a good outcome. I will be honest I could not see this defect when I received the tank it wasn't until I got light over the filled tank that it was noticeable. so I would suggest light and water to be able to inspect the tank. planet has been known to be a good company so im hopeful this is a isolated situation.Ugh, that sucks! Makes me nervous bc my 310 just got here and I went with a custom stand, so the warranty period Is very short.