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Old 09/16/2020, 07:21 AM   #1
ravedood
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Calcium reactor - effluent alkalinity too low

I am setting up my first CaRx. It is a Geo 612 with a GLA regulator all controlled by an Apex. I am using ARM media. The highest I can get my effluent dhk is about 8.7. The solenoid opens at 6.5ph and closes at 6.7. I am pushing water through the reactor with a continous Versa pump. The effluent drips out at about 1 drop per second. I am having to manually add alkalinity to keep my levels up. I was expecting the effluent to be between 15 and 35 dkh. What am I doing wrong?


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Old 09/16/2020, 08:37 AM   #2
Vinny Kreyling
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More CO2 will raise your effluent. I use a Kamoer & PULL through. There is the thought that pulling allows for less back pressure for the gas to overcome & thereby allowing you to run @ a lower pressure. I can run @ just over 3 PSI with a Carbon Doser regulator.
Sometimes media will have an effect too. Years back MTC a well respected company used Carib Sea Florida crushed coral. I use the MTC Mini Cal & crused coral & my effluent is in the range you are looking for. It's cheap too. Adjust ONLY 1 parameter, bubbles or flow in a 24 hr period & then check.


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Old 09/16/2020, 02:28 PM   #3
ravedood
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Yes i was under the impression that more co2 or slower drip rate would increase the effluent dkh. My carx already looks like a cup full of sprite with the amount of co2 that is in there. Should it look like that? Will it blow of i add more co2? I feel like the co2 is not dissolving the arm media. Should I maybe lower the ph in carx even lower that 6.5?


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Old 09/16/2020, 05:15 PM   #4
Vinny Kreyling
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It should not look that way. I would lower the drip rate giving the chamber more time to dissolve the media. Some have complained ARM does not dissolve so I would lower the PH to 6.3 also. After that if you still have problems I would change the Versa to pull. Do a search on ARM media for more suggestions.


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Old 09/17/2020, 09:11 AM   #5
ravedood
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I have lowered the drip rate to 5ml/min. I also set the solenoid to turn off when the chamber reaches 6.4 PH. Lets see if the effluent dkh goes up.


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Old Yesterday, 01:55 PM   #6
dadnjesse
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You say it looks like a cup of Sprite . Is it noisy? It sound like it has an air leak. Also don't be afraid of lowering the PH to get higher Effluent Alkalinity DKH. It should be at least 20 DKH


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