A friend and I recently built a stand for one of my 87g tanks. It actually turned out quite nice. The stand was just about perfectly level so there was no issue there. However last night when i was filling the tank with water i noticed something not so good. The tank was over 3 quarters full when i noticed the water in the back of the tank looked lower than the water in the front. I measured it and sure enough the water in the back of the tank was 3/4 of an inch lower than the front of the tank. I looked at the stand and the front was sinking into the carpet while the back was not, causing the tank to lean slightly forward. I drained it and put the tank further back on the stand but still no luck. Any idea's how to fix this?