Reading the post below reminded me my pump has started acting up again. Preasure on bladder bleeds down and pump continously cycles off and on when tap is running. Been doing this for couple years. I solve problem by pumping air into bladder again with compressor about every 6 months or so. If what I understand from reply's below bladder must have a hole in it and water could be entering tank side causing it to rust out and eventually leak?? Should I be looking at replacing tank or at least bladder in tank if it is available? Thanks Rocko. BTW gonna read further back for original post.