Yeah, I was wondering on buffing the Acrlyic, I know glass probably has minor scratches that cant be buffed. I have had that happen with a used tank I bought before. luckily not very noticeable if not up close staring at it.
I did see the Petsmart 125, which is what the used one is (1 year old), I could build a better stand too which would be nice. But the non-low iron glass of petsmart I am questioning, because my current 55 is low iron Visio glass and I don't want to sell it to replace with a low quality glass. It has kind of spoiled me..... especially if I only upgrade to a 75.