- Location
- Pennsylvania
I'm thinking of buying a cal reactor for 1 of my cubes. Which reactor would my fellow reefers recommend?

I just setup a GEO612 for my 75g a month ago. Solid performer. Of course, having the AquariumPlants' Carbondoser electronic regulator helped a TON!
where do you put a ph probe?
I see ph controllers being used on cal reactors, can the Apex do the same thing?
