Wash with too little water pressure in the pipe
Especially in the upper floors is due to calcification often too little pressure on the water pipe. Then it is advisable to avoid liquid detergents. Otherwise it may be that too much clumped powder gets stuck during the flushing and the flushing chamber is blocked. In addition, valuable washing power is lost. For laymen - and we are all of them - it is also difficult to clear the access routes again.
Since water softeners are only contained in powders, the addition of water softeners can be recommended for very hard water.