I have a 27' round ABG and a Hayward 2 speed pump with a three way mechanical switch that is mark Low-Off-High. Everything was purchased from The Great Escape two years ago. I want to add a Hayward GL-235 solar controller two automatically switch the panels on or bypass them. I run my pump on low speed 24/7 but I believe I read somewhere that the solar heater would work better if the pump was on high speed. Is there a way to have the controller turn the pump to high speed when it calls for heat or should I just leave the pump on low speed?