So I picked up this dresser or cabinet type thing off craigslist to hold my aquarium stuff and use as a stand for my 20 gallon Long planted tank. I didnt realize it until now, once some of the water evaporated so I could really see, but it seems as though the water left on the front of the tank is about 1/5th centimeter lower than the back side. And the water level on the front right side of the tank is about 1/2 centimeter lower than the water level on the front left side. So basically this shows that the back right corner of the tank for some reason is higher than any part. I dont know if its the stand, or an uneven carpet floor maybe? But do you think this is something to be worried about? Please gimme your opinions! Thanks MFK.