We experienced a minor setback today.  While filling our 500 gallon tank yesterday a "puddle" of water developed.  Unfortunately, the puddle wasn't from spilled water, but was from a slow leak. Through some careful observation I was able to identify where I think the leak is coming from.   Hopefully the manufacturer can make things right as this tank is not even a year old and made to withstand the abuse from livestock weighing several hundred pounds each.