ORP controller confusion

[lukegavin87]

Hi everyone, I went to my lfs earlier looking for a controller for my ozone generator. After a chat I got a Milwaukee mc122 ph controller (it says on the box it does orp too) the guy said it was dual ph/orp. After Getty my home I realised it only monitors PH to control both. What would be the correct upper and lower ph settings to control ORP?

 

[hkgar]

Y ou cannot control pH. It has a mind of its own. The only relationship I am aware of is that ORP will increase as ph increases.