I had one shower head that keeps collecting white/greenish deposit. It slow the flow of shower. Several sinks do the same. I cannot open it (it has several layer of metal screens on it. It cannot opened (the aerator).
I do have a water softner from Sears (4-5 years old). It did not have such problem until last few months. I have been in this house for seven years. The house is ten years old. I am suspecting the water heater causing the problem.
Any advice would be appreciated.
Thanks.

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