JRagg said:
Thank you. I know dealing with me can be trying at times
.
Not at all. We are all here to help someone or get help from someone.
dapellegrini said:
Tom -- If I am understanding you correctly, what you are suggesting (adding an O2 cap to the end of my pH probe) is not currently an Over-the-counter option, right? Sounds like it would be a DIY until one of these manufactures jumps on it.
Also, apologies for being dense, but I want to understand what you are explaining here, and I am still missing something. I have a Milwaukee pH Probe that plugs into a Monitor (SMS122), that displays a pH reading in #.# format. I have 4.0 and 7.0 reference solutions for calibration. If I were to add an O2 cap on the end of the pH probe, filled with a kH reference solution, say of 4dkH, that would mean that my pH meter is measuring the pH of the kH solution, right? So what have I accomplished, and what does the #.# reading on the meter mean? It is one of those days and I really need someone to spell this out for me...
Randy -- apologies for hijacking your thread a little here. I hope this is still relevant to your OP...
It is the same concept at a drop checker, but instead of using the pH kit solution to measure the pH, you are using the pH probe. Just think of it as a drop checker with a pH probe inside of it.
That method is by far the most accurate. The drop checker removed the error associated with KH testing and adding the pH probe removes the error associated with measuring pH. So, now you know for a fact exactly what your CO2 is. Using the pH probe also gives you a quicker response time as Tom has said.
EDIT: I didn't read page 2 before I posted
. I see you got it.
dapellegrini said:
Randy -- apologies for hijacking your thread a little here. I hope this is still relevant to your OP...
This subject probably should have been separated, but I started it that way. I started the tread with 3 main goals. One was to show how I over came BBA, another one was the concept of the drop checker for CO2 measurement, and the last was using Excel to kill algae. As you can see, I should not have set it up this way, but they all worked together to get me to where I am. ie you are not hijacking anything, just adding to the OP and I thank you for that.
EDIT: JRagg, you are totally correct on the regulator setting. Having to high of an output pressure will make adjusting the needle valve that much harder.
FWIW, when I was close to the setting I wanted, I didn't move the needle valve, I only adjusted the regulator just like the instructions said. By leaving the needle valve wide open and adjusting using the regulator, you will only end up with problems, because now all you have done is removed the needle valve from the process stream. You have to control the output with the needle valve due to the regulator not being sensitive enough to control the CO2 at the level we need it at.