Need help... I noticed white particles in our water and our water pressure began getting weak. A plummer advised me to drain and flush my water heater. I did that until the water ran clear. All faucets work except for the one closest to the hot water heater, well actually I had to take off a few heads and pull the left over white particles out, and now they do work except that one. Im sure there is probably stuff in the pipe but it is to the shower. How would I flush these out. I tried to use a compressor and blow in it but didn't work. I am at a loss on this one.

The white particles your seeing are pieces of the fill tube that have disentegrated inside your hot water heater. Depending on your particular heater, it can be as simple as removing the cold water inlet nipple going into your heater and then simply pulling the filler tube out of the heater and dropping a new one in. Once the fill tube is replaced, my suggestion would be to completely drain your water heater and refill it.

Now the particles that are in your line will simply have to work themselves out. Once the heater is refilled, I would take off all aerators and shower heads and let them run for a while. It also helps to run a tub where there's no screen.

Over time, chlorine and other chemicals cause the tube to disentegrate and it clogs aerators and screens in your line. This will get you started in the right direction.