All the stand needs is some sanding/restaining or some paint. I have a 125 and the stand, I'm sure, was fine but just to make me feel better I cut up some 2x4's and reinforced it all over the inside. It was reall easy to do and it gave me piece of mind. The stand is PROLLLY ok!!! But as the other's have said a few more boards sistered against the sides and cross sections inside the stand would be a good idea.
I Got my 125 (drilled w 2 corner overflows), Stand, wetdry, 1300 gallon pump, skimmer, uv sterizer, and a 500 watt titanium heater for $300 bucks.
But free is almost always better!