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Discussion Starter · #1 · (Edited)
On my 70gal tank if I set my regulator to 25psi and diffuse at 2-3BPS I get no reading on my drop checker? I have to turn my parker MV H3L up to 2, 9 anyone who has one of these or seen one know what I mean. I have my CO2 running to a Ista Max Mix right now but i had it hooked to a duetto 100 filter,a glass diffuser,an I also tried a rhinox 5000 I think it was. The max mix seems to be doing the best for some reason. I also turned down my MV to 2, 5, to see if I get the same reading on my drop checker. If anyone can offer any help into this?

This is a pic of the same Metering Valve I have on my 5gal u see this one is set on 2, 2,
 

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You have to make sure you are using the standard 4kdh solution on the drop checker and adding 2 to 3 drops of the blue PH agent. If you did that and the color isn't changing in 2 hours, your CO2 level isn't high enough. Then, you have to continue to increase your CO2 level. Do this gradually or by 1 working psi in every 2 hour. Watch the fish to see if they are grasping for air. Do this while you are home all day. BTW, you have a 70g. 2 to 3 bps won't cut it. Most likely you have to increase your CO2 level so much that you couldn't even count the bps. :) So, don't use the bubble counter. Second thing, try to turn your needle valve almost fully open. Drop your working pressure to 10psi to 15psi. Your CO2 reactor, Ista Max, does not require a lot of pressure to work. I am using the same CO2 reactor. My working pressure is 13psi but my needle valve is pretty wide open. I have a 40g tank.
 

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As said above, make sure you have 4kdh with the proper PH solution. Secondly, make sure you don't have any leaks and you can see bubbles in the reactor (it looks like it is clear). Turn it up slightly every day if your fish seem to be acting normal. You can also move your drop checker around to see if you are getting more CO2 in a different area of the tank.

It does seem strange if you are doing all that because even if you are not close to 30PPM, it should change a bit, even if you are well under that, you should get a blue green. I know for myself, with much smaller tanks, I can be injecting almost nothing and get some color change.
 

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What drop checker are you using? I ordered a GLA Pearl, think the opening is too small, it takes a really long time to change color. I recently installed a pH controller so at least I can see what the pH is without relying just on the drop checker.
 

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Discussion Starter · #5 ·
What drop checker are you using? I ordered a GLA Pearl, think the opening is too small, it takes a really long time to change color. I recently installed a pH controller so at least I can see what the pH is without relying just on the drop checker.
I got one of those plastic drop checkers it looks like a little oval shaped egg.
 

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I think that's what it is, I only used the liquid that came with the drop checker mixed with tank water as the instructions stated.
This is the incorrect way of doing it. Most drop checkers (unfortunately) come with incorrect instructions telling you to mix it with aquarium/distilled/tap water, when using a solution of a known dkH is required (a 4 dkH reference solution is commonly used).
 

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I bought some self-proclaimed 4dkh water off Ebay. How do I know for sure what I received was truly 4dkh? I don't want to gas my tank because I was too lazy to spend 5 minutes mixing my own solution. But if it really is 4dkh, I would rather not mix my own (yes I saw that link som1 posted earlier on how to make diy 4dkh water).
 

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Discussion Starter · #10 ·
This is the incorrect way of doing it. Most drop checkers (unfortunately) come with incorrect instructions telling you to mix it with aquarium/distilled/tap water, when using a solution of a known dkH is required (a 4 dkH reference solution is commonly used).
I'm getting some in the mail already, like u learned me I did some research. Lol ; ) Tanks!
 

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I got my water off eBay also and been using it in an Ada drop checker with Ada ph for over 2 years.



Sent from my iPhone using Tapatalk
 

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I bought some self-proclaimed 4dkh water off Ebay. How do I know for sure what I received was truly 4dkh? I don't want to gas my tank because I was too lazy to spend 5 minutes mixing my own solution. But if it really is 4dkh, I would rather not mix my own (yes I saw that link som1 posted earlier on how to make diy 4dkh water).
Do you have a carbonate hardness test kit? You can verify your reference solution that way.
 
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