I bought a package of 2 bottles of Durgol espresso machine decalcifier, followed directions in the instruction book exactly, running one bottle with 12 oz of water through my SAECO machine. Then I washed the water tank, refilled it with cold water to run it through the machine, and no water will come out, even though the machine is on and making the buzzing sound it does when making espresso. I think the decalcifier has ruined my espresso machine!