I bought a used 225 a couple of years ago, was in great condition, not a scratch on it, it sat in storage and I just got it out of storage and discovered a few cracks in the top frame, I'm thinking this was caused by the extreme cold (-16F) this past winter. Anyway, my thought is that I should replace before trying to set it up, my question is where can I order a replacement top and how difficult is this task going to be? I believe this is a marine land reef ready tank but i really don't know for sure. Any help would you can give would be great. Thank you