Hello, I am in the process of setting up an acid dosing system with a stenner pump. My system currently has a pentair vs pump, manual valves, intermatic mechanical timer running the pentair swg and pool vacuum pump. This weekend the power went off at the house and the mechanical timers got out of sinc with the the vs pump electronic timer. This made me realize that I could be running a big rick without a check and balance when acid dosing. This is the need for a relay recommendation. I have not been able to find one. The stenner pump is 120v 1.7 amps.