Chalky dishes in dishwasher. I have a chalk like film on my dishes from the dishwasher. I have

Question

I have a chalk like film on my dishes from the dishwasher. I have used a dishwasher cleaner for the inside of the dishwasher. The heating coil seems to have the same chalky film. The dishwasher is less than two years old.NEED TO FIGURE OUT HOW TO GET THE TOWER OFF OF THE BOTTOM TO CHECK OUT THE DRAINING CIRCLE TO SEE IF IT HAS GOTTEN PLUGED WITH SOMETHING. THE SOAP HAS NOT DESOLVED AND THE DISHES ARE NOT CLEAN AFTER THE END OF THE CYLCE.