pH controller settings?

[Richieboy]

Hello everyone. I was wondering what everyone sets their pH controllers to as far as when to turn on the CO2 solenoid and when to turn it off. I am using Gen-X reactor media. Can anyone give me recommendations on what pH to set my pH controller to for the CO2 to turn on and off and how do I know if the pH settings need to be changed or not? Thanks

[jansenwrasse]

Your reactor, is it single stage or dual stage? Where will you be measuring the pH?

If it is a dual stage and you are measuing the effluent then I would set the pH to turn off at about 7.4 for now, and monitor things closely for a few days. Also keep an eye on the tank pH.

Good Luck!

[Randy Holmes-Farley]

This may help:

A Guide to Using Calcium Reactors
http://www.reefkeeping.com/issues/2002-05/sh/feature/index.php

[Richieboy]

Thanks for the article Randy, very helpful. I am using a single stage geo reactor. I have a pH monitor for the display tank and a pH monitor/controller for the reactor itself.

[Randy Holmes-Farley]

:thumbsup:

Sounds good.

Good luck. :)

[Rouselb]

Is there a preferred magnesium substrate that can be added to the reactor to keep magnesium levels constant?