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Houston Cool Pools
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Glossary • Letter P–R

Pool Glossary - P–R

An A–Z reference of pool and spa industry terms - chemistry, equipment, construction, water features. Written in plain English by a real Houston pool builder.

ABCD–EF–GH–KL–OP–RST–Z
P

9 terms

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. A dry run can burn your pump out.
PSI
Pounds per square inch. A measure of pressure.
Pole
A multi-purpose maintenance pole with attachment holes that 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 you can check for debris. Generally needs to be emptied about once a week or more.
Reagent
Chemical used with test kits to test water chemistry.
L–OS

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