Just finish setting up a 120gal tank I got off Craigslist very nice tank. However after filling it up I noticed the water level from one side to the other is off about 1inch. I checked the tank and the stand both are off level, but then I checked the floor and the floor itself is off level (big legal issue with the city so I know the floor is off level). My question is, is their much I need to worry about considering the floor itself is offlevel? And if I level it will I have to worry about the gap on the bottom of the stand? And with this all being said I also have a 55gal with the same problem. I guess I'm just not sure how big of a problem this is, should I shut it all down immediately and fix it or should it be good to go?