I am hoping to be able to set up a nanocube in the next few months and have been looking at them online. I was considering the 29 gal Oceanic Biocube. I was looking at them online yesterday and noticed that the people who reviewed it on Petsmart's website said they had problems with leaking and one even arrived home to find that it had cracked and drained out during the day. Is this common for this tank? I was also considering a JBJ nanocube but haven't really heard anything about them.