jharding08
03/25/2013, 11:30 PM
I does Calcium and Alk using Drews Dosers pumps hooked up to an Apex Controller. I dose Calcium during the day and Alk at night.
For my Alk, the program looks like this:
Fallback OFF
OSC 000:00/002:30/057:30 Then ON
If Time 05:00 to 21:59 Then OFF
If pH > 08.30 Then OFF
I dont know if it is a problem, but within the 2.5 minutes that the pump is on, it will turn on and off several times. I think it has to do with the pH limit, but I cant see that in my graph (pH reading is every 10 minutes).
I'm wondering if the dosing pump turning on and off so frequently will wear it out. Would it be better to not run Alk at all for the 2.5 minutes if pH is over 8.30 when the Alk progam begns?
I have the pH probe in the same sump chamber as the dosing outputs. That is probably why the pH is so sensitive. Should I move the probes to a different chamber?
Here is the graph from the Apex:
http://i36.photobucket.com/albums/e23/jharding08/Alk_pH_32513_2200_zps93bdd844.png
For my Alk, the program looks like this:
Fallback OFF
OSC 000:00/002:30/057:30 Then ON
If Time 05:00 to 21:59 Then OFF
If pH > 08.30 Then OFF
I dont know if it is a problem, but within the 2.5 minutes that the pump is on, it will turn on and off several times. I think it has to do with the pH limit, but I cant see that in my graph (pH reading is every 10 minutes).
I'm wondering if the dosing pump turning on and off so frequently will wear it out. Would it be better to not run Alk at all for the 2.5 minutes if pH is over 8.30 when the Alk progam begns?
I have the pH probe in the same sump chamber as the dosing outputs. That is probably why the pH is so sensitive. Should I move the probes to a different chamber?
Here is the graph from the Apex:
http://i36.photobucket.com/albums/e23/jharding08/Alk_pH_32513_2200_zps93bdd844.png