My system draws water from a canal. We are in Florida and the canal is weed infested. When I turn the pump on I get water at the appropriate zone, but very low pressure. We have used this system for 9 years with only minor (lawn mower 'chews up' the sprinkler heads) problems. Now every zone is suffering from low pressure. Could the pump and its out going lines be 'clogged' with dead weeds? How would I 'clean' the pump?
