Hi,

A softner will cure the problem. Another way is to flush the bottom of your
hot water tank once a month but if it is full now it will be chunks so you may
need the softner to break that up. An inline filter will help the current
problem also. Pipe it in to the outlet above the tank. Calcium causes problems
in tanks. It can actualy create electrolosis and eat through the jacket. An
ionizing rod can help get it out too. Drop it in the tank if you can disconnet
the piping.
Your area must use well water or some high calcium water the city didn't treat
right to lower it.

candice