I Need help. My cat 2000 controller is picking up stray voltage in the water. My ORP jumps around about 100-200mv from actual reading. I have taken my ORP and PH probes out and placed them in a container with my pool water and they read correct and do not jump around but when I place back into the system the readings jump around. My pool is inground 14k gal with a bromine feeder and acid pump attached to the cat2000 controller. Filters through a cartridge system and the fill valve is connected into main water system. Does anyone have some tips to resolving my issue or should I contact an electrician?