Such a great deal I'm very happy for you to find such a steal,
two days ago I found a 40Gallon with stand lid lights, & an air pump the person was only asking 10$$!!!
I told my Wife I was going to go pick it up She said no more tanks I said I won't set it up it will be when I get my Fish...
SO JEALOUS!!!! Great steal if its real wood and you can sand it down and restain it AWESOME!!
even if it leaked, Some GE 1 Silicone 6$ at ACE a couple hrs to scrape old silicone and put new silicone and few days cure, and boom sweet 75G tank!!!!!
I have a 25-30 gallon long TRU VU Acrylic tank and the back bows about an inch, I thought hmm doesn't look good but I haven't worried about it and nothing has happened (KNOCK ON WOOD) So I just thought this was normal I hope other people have input on this also.