Hi, I use a DOS to feed my calcium reactor. I want to use both pumps so that the pump head speed will be as slow as possible to keep the noise level down, with the goal of keeping my intervals at exactly 60 seconds and my number of doses at 240 so that I could run a four hour profile, six times a day. I believe this will keep my DOS running as close to continuous as possible, without pushing it past its limits, and I created a spreadsheet that I believe will help me calculate the necessary DOS settings. Protecting the sheet will render only the yellow fields editable. I am posting it here, hoping that someone smarter than I will take the time to analyze my formulas and find any errors.
Column Q solves for the effluent flow in liters/day necessary to exactly replace the alkalinity used by the system, assuming that the effluent alkalinity is not affected by the proposed increase in effluent flow.
Column T solves for the effluent alkalinity necessary to exactly replace the alkalinity used by the system if the current DOS settings aren't changed.
I believe this will give me two ways to increase the alkalinity in my effluent, so I can pick the one that fits my needs best at the time.
Here's my DOS profile:
DOS Profile.jpg
Here's my DOS left pump head output configuration:
DOS Output Configuration.jpg
The right side is identical.
I set this up yesterday and it ran fine all day, but for some reason both heads stopped pumping at exactly midnight and did not pump at all today. Can anyone tell me what I did wrong? The output log shows the DOS had power all day, and the pH was never below 8.
Also, can someone please tell me how to attach the spreadsheet? I clicked on the "Attachments" button above, but it tells me the file is invalid.
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