pH in calcium reactor

[Infinitereef]

i am dialling my GEO 618 reactor now.

How long does it take for the pH to stabilize in the chamber??

I am setting the effluent rate = 25mL and Bubbles Count = 40 Bubble/min

 

[mhurley]

I always let it set 24 hours before changing anything.

 

[jjjimmy]

Adjust, wait 24 hours, check, adjust. Repeat as necessary to get the results you are looking for.

Once you get used to it, you should be able to set it good enough by eye.

Jimmy

 

[mhurley]

Make that "used to". Since I no longer have one.

 

[Infinitereef]

Before I turn on the CO2, my pH in the Reactor is 8.2 which is what my tank is. fine

After adjusting the Bubble count, my pH has drop from 8.2 to 7.3 or so in about 30mins.... it seem to stabilize around 7.3, but I am just wondering whether ph is still adjusting in the Reactor and it take a while to go down.

My target value is 6.8.

 

[Infinitereef]

There is 2 gauge on the regulator.

The working gauge ( right gauge) read approximately around 1.5kg or 25psi. Is this correct? I thought it should be 2 to 3? It started as 2kg initially (8hrs ago)

 

[prugs]

<a href=showthread.php?s=&postid=8248460#post8248460 target=_blank>Originally posted</a> by Infinitereef
There is 2 gauge on the regulator.

The working gauge ( right gauge) read approximately around 1.5kg or 25psi. Is this correct? I thought it should be 2 to 3? It started as 2kg initially (8hrs ago)

I keep my working press at approx 5psi.
What your looking for is a steady bubble count. You only need enough press to keep a steady bubble count. To much press will make the needle valve adjustment erratic & hard to adjust.
You are looking for an effluent PH at around 6.7

 

[mhurley]

25 psi on the right is good. The needle valve controls the rest from that point.

Let it run for 24 hours, see what it is then and adjust at that point.