water in your CO2 regulator? (AKA where to put a check valve?)
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water in your CO2 regulator? (AKA where to put a check valve?)

This is a discussion on water in your CO2 regulator? (AKA where to put a check valve?) within the Beginner Planted Aquarium forums, part of the Beginner Freshwater Aquarium category; --> I have nothing but issues with this pressurized CO2 set up. It's currently set up like this (I found this info on the internet): ...

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water in your CO2 regulator? (AKA where to put a check valve?)
Old 04-14-2010, 06:59 PM   #1
 
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water in your CO2 regulator? (AKA where to put a check valve?)

I have nothing but issues with this pressurized CO2 set up. It's currently set up like this (I found this info on the internet):

CO2 tank -> regulator with needle valve and solenoid (on timer)----> bubble counter ----> check valve ----> diffuser

However, every night when the solenoid turns off, the flow seems to reverse somehow. Water from the tank fills the diffuser and goes down the line toward the check valve. More concerning: distilled water drains from the bubble counter and down the line... coming thiiiiiiis close to flowing into the needle valve.

Is something wrong here? I'm nervous about having water come so close to entering my needle valve. I wonder if I should have the check valve between the regulator and the bubble counter.

Thoughts? How do you have yours set up?

Last edited by SilersAngryMeow; 04-14-2010 at 07:01 PM.. Reason: can't type worth a darn
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Old 04-15-2010, 03:51 PM   #2
 
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anybody use a check valve at all?? haha
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Old 04-16-2010, 01:07 AM   #3
 
yes you should have 2 check valves, one before and after the bubble counter for good measure. You should be using good, brass or stainless check valves. I've tried the plastic ones and they tend not to work in a CO2 setup. IDK why that is.... or they will work for a while then fail eventually....
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Old 04-16-2010, 12:29 PM   #4
 
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For some reason, my LFS only has plastic ones. Hmm. Guess I'll have to invest in a couple better ones. Thanks for the input :)
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