I have had my 180g set up for almost a year now. I have had some problems with the sump as far as the acrylic warping and not having a good seal at the top where the water flows from the bio ball chamber over to the main area. In the last few days I have had a water leak and the carpet seams to be getting wet around the tank. There are no visible signs of a major leak or even minor for that fact. There is nothing wet in the tank stand itself. We have had a lot of rain the past few days, but we have never had a problem with it coming from under the sliding glass door, or from under the slab. Has anyone out there ever had a problem with this same model/type of sump? I wou;d hate to move the tank to the other side of the room only to find out that it is the tank... :x