I have a Triton Opal shower that was installed about 2 years ago. It was working fine - powerful and hot and then suddenly the water pressure seems to have reduced and the shower light for \\\"low pressure\\\" shows and it runs cold. We live in a flat and the shower is run from the mains cold water supply. I note the above comments about my model of shower and installing pumps, but just wanted to check everything before going to the expense of buying a new shower etc.