Am setting up my 55 gallon aquarium, it is on a nice wooden stand cabinet and today I checked it out to see if it was level. The front of the tank on both sides are aprox. 1/4" or around that to low. I know that there is an amount that a tank can be off without affecting anything, is 1/4" O.K. or should I raise up the front of the stand? The stand is setting on a semi thick carpet so I'm not exactly sure on the best way to do it. Haven't checked the length of the tank for leveling yet but will do it soon. I'm wanting to eventually put some pool filter sand into the tank and maybe add a bag or two of black sand or some other color for a little color on the bottom, I'm really wanting to put some multi shell dwellers into the tank and raise some.