Bladder tank it runs frequently

If the pump on a bladder tank runs frequently, you have low tank air pressure or a wrongly set pressure switch. If you've never played with the switch, then rule that out. - Let the tank empty of water with the pump switched off. When all water has ceased to flow, even out of the tank drain, then rock tank and see if you can detect water inside. If you can, then the bladder has become punctured and is letting water into the air side. You can fix this temporarily by attacjhing a compressor to the valve on top and inserting about 27 psi of air (while the tank is empty of water, or close to it) This will give you2-4 months of better usage, buut will soon deplete. - It's time for anew tank.