Report "off every 50 seconds, the pipework (2") has been flushed out,& there is no air in the system the filter is a Hayward C500. The pool is 12000 gallons, power from the house 230v is 45 feet of 2.5mm solid core cable, direct from the junction box. the skimmer & the drain are clean, & free of any debris, both eyeballs are new & in place, the ambient air temp is 31c, the water temp is 32c, & airflow around the pump is good, do I need a bigger pump?"