Why is the pressure gauge on the filter is abnormally low?
A. A low pressure on the filter gauge usually indicates that water is not being allowed to get to the pool pump. The usual suspects are that the skimmer baskets and the pump strainer basket are clogged with debris (and should be cleaned), there could be a leak at the suction side of the pump, the pool water level is too low and the skimmer is sucking air, the skimmer weir (the little door in the mount of the skimmer) is stuck in the up position and must be freed, or the pump lid o-ring is missing or seated incorrectly (may just need lubrication).
