Hey All,

I also posted this on Reefcentral....


here is what i would like to do....

i will have 2 sensors

sensor 1 is low level
sensor 2 is high level

pump 1 is ro top off
pump 2 is empty from sump
pump 3 is refill saltwater from storage tank

normally when sensor 1 senses low level pump 1 turns on to refill until sensor 2 trips...turning pump off...normal ato......

on a certain schedule (daily or weekly) i would like to switch to water replacement....

pump 2 turns on and drains sump until sensor 1 trips...at that time pump 2 turns off and pump 3 turns on to refill sump.... when this completes the normal ato mentioned above resumes...


Can i do this? how

thanks

Larry