programming slave dosing pumps

[stephencraig]

Can anyone point me to a thread or tell me how to program a slave dosing pump? I have a 2 pump unit, and want to set it up as an ATO with a level sensor. I also want it to use pump 1 (fresh water) when Ph is = or < X value, and pump 2 (Kalkwasser) when Ph is > X value.

Thanks for any help.

Stephen