How old is your home, and what type of plumbing do you have, i.e. copper, galvanized pipe, etc.?
I concur. The reason that I asked the age and type of plumbing was that my first suspicion was perhaps galvanized pipe, but Daniel is right on the mark to check aerators, etc. first. Either way though, it sounds like a blockage closer to the point of use, not at the pump or tank.I am going to guess that there is nothing wrong with the pump or pressure tank. You may have a blockage in the fixture that is getting low flow (may not be low pressure, may be low flow).