On occasion I help with a large in ground pool. I operated the pool for 3 years with no problems. I was there the other day to help with pump seals and found that the Hayward Pro Series sand filter was cracking at the seams. The pressure gauge was pegged and stuck. I suspect the current operator has not been back flushing soon enough. A few months ago I found the gauge at 55 #'s.
Would this be enough to cause the tank to split?