Water in Co2 line

yelnats65

Junior Poster
Jun 30, 2006
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I'm having a problem with water backing up into the Co2 supply line at night when the solenoid shuts off. It takes approximately 1 hour in the morning for all of the water to clear out of the line.

The set up constists of a Co2 bell placed under the canister inlet. The Co2 tank is placed in the tank stand along with the Ehiem canister filter. I have tried using a check valve with no success.

Any suggestions on resolving this matter?
 

Tom Barr

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Staff member
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Jan 23, 2005
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Re: Water in Co2 line

Check valve.

Add loops, raise the CO2 line above the water surface etc.

Rex Grigg sells some nice brass check valves for about 10$.
Search his name and you should fine his site.


Regards,
Tom Barr
 

VaughnH

Lifetime Charter Member
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Jan 24, 2005
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Sacramento, CA
Re: Water in Co2 line

Unless you are using a brass check valve your check valve has probably failed. I have had a couple of them fail, and water backing up in the CO2 line is how I found out about it. Now I use Rex's valve and have had no problems for about 3 months. (This sounds like a testimonial for some patent medicine!)
 

Wet

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Aug 25, 2006
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Re: Water in Co2 line

A simple DIY bubble counter may work. I like the little tonic water/gingerale bottles for this. If water backs up the line it will just go into the bottle.
 

Superglue

Junior Poster
Aug 14, 2008
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Regular fish stores sell those plastic check valves that I have been using for years. Haven't had a problem yet.
 

ccLansman

Guru Class Expert
Jan 22, 2008
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Vista, Ca
i use a bubble counter like most of the rest of you's... the bubble counter has a one way valve. Problem solved... if not... the water cannot possibly push all the way back to the solenoid, even if it did no harm, its just a metal needle in a hole.