Pooled Energy controls:

Salt level (to make sure the chlorinator is working correctly).

Calcite Saturation Index (to protect the paint, pool surface and concrete shell of your pool).

pH if required

ORP (Oxidation Reduction Potential) which is the best measure of the sanitizer level in the pool.  ORP measures the effectiveness of sanitiser and is the professional measurement used in all major aquatic facilities.

Stabiliser level,

Buffer level,