P
pH - Potential hydrogen ion concentration. The number represents how acidic or basic the water is in a pool or spa. Probably the most important factor in pool water chemistry.
Plaster - A smooth cement coating that seals a gunite pool shell. The color of the plaster determines the apparent color of the water. White = Light Blue, Grey = Deep Blue, Green = Blue/Green, Brown = Emerald Green Water.
Prime - Process you sometimes have to use to make a pump run as intended. Full of water, no air bubbles and not dry. Dry run can burn your pump out.
Psi - Pounds per square inch. A measure of pressure.
Pole - Multi-purpose maintenance pole has attachment holes and can extend to a long length. Can be used with a brush, vacuum head, leaf net or rake.
Pressure gauge - Gauge on top of the filter to measure pressure. It will indicate when the filter needs to be cleaned.
Pump - Pool equipment located on your main equipment pad. Circulates water from the pool to the equipment and back to the pool.
Pump basket - Basket at the front of the pump usually under a clear lid so that you can check for debris in the basket. Generally need to be emptied about once a week or more.
R
Reagent - Chemical used with test kits to test water chemistry.
