PLEASE let only qualified mechanics work on your tanks! We are seeing too many unsuccesful repairs being made that are only making things worse. NEVER let anyone tell you that it is OK to seal the outside of the tank. This is a sign that they do not know what they are doing. We are seeing complete covering of interior surfaces, making the tank look more like a bladder. Sump drains are being covered up alowing water to reach depths of 1/2" before it will drain. Also, flow holes in ribs bein