Ok thanks. I’ll go with that then. I didn’t think i really wanted 2 running at the same time as it seems like overkill, but it’s simpler and they don’t use many resources.
I can’t find anything in the UI, so I assume this is still the way to tell pi-hole’s DHCP server about both DNS’s.
EDIT: A better way is mentioned further down in that thread to create a separate file so UI changes don’t overwrite it.