What to keep ph controller at?

[nissan97240]

I just got a GEO calcium reactor with everything that needed from Premium Aquatics great company and fast shipping, but anyways I just wanted to know what I should program the ph controller to turn on and off at?

 

[Murfman]

Mine comes on at > 6.8 and off at <6.6

 

[AZDesertRat]

It really depends on the media you are using, some dissolve at higher pH levels than others. Each manufacturer or vendor has their own recommendations but I am close to what Murfman recommended and I use Aqua Medics Hydrocarbonate in the medium-large grain size.

 

[gilmour01]

i run the coarse Gen-x media, and i keep the pH about 6.7 just like others have mentioned.