Found my CO2 leak

kid creole

Prolific Poster
Dec 19, 2008
34
0
6
Raleigh, NC
My solenoid is leaking out both sides. I have the tubing that came with my red sea kit. As best as I can tell, I should insert the tube in as far as I can, and then pull back on the red piece of plastic. It's just blowing CO2 straight out.

How do I rectify this situation? Do I get a new solenoid, or am I connecting the hoses wrong?

Thanks.

By the way, the tank is looking great, thanks to good advice from the folks here.
 

VaughnH

Lifetime Charter Member
Lifetime Member
Jan 24, 2005
3,011
94
48
85
Sacramento, CA
I assume this is the solenoid:
redseasolenoid.jpg


That looks like it uses a nut at each connection. If so, these usually work by you pushing the nut onto the plastic CO2 tube end, pushing a little metal tube inside the end of the CO2 plastic tubing, then pushing that end into the solenoid fitting and screwing the nut down a bit more than finger tight. I can't tell for sure from the photo if this is the type of fitting you have.
 

VaughnH

Lifetime Charter Member
Lifetime Member
Jan 24, 2005
3,011
94
48
85
Sacramento, CA
The photo I posted is from the Red Sea website. I haven't seen anything like what you have, but I suspect those red rings are supposed to be inside the nuts on the ends of the solenoid, so tightening the nuts squeezes them down onto the tubing. And, I have to wonder if that connection is intended just for rigid tubing, not flexible tubing.
 

kid creole

Prolific Poster
Dec 19, 2008
34
0
6
Raleigh, NC
VaughnH;32619 said:
The photo I posted is from the Red Sea website. I haven't seen anything like what you have, but I suspect those red rings are supposed to be inside the nuts on the ends of the solenoid, so tightening the nuts squeezes them down onto the tubing. And, I have to wonder if that connection is intended just for rigid tubing, not flexible tubing.

I forgot that it wasn't part of the Seachem kit, it was purchased separately here:
CO2 Solenoid Valve | Pet Solutions

I think it needs rigid tubing, not silicone tubing.
 

SuperColey1

Guru Class Expert
Feb 17, 2007
503
0
16
46
Lincoln, UK
vaughan. They are 'push fit' ones. Similar to industrial airlines (but much smaller) where you clip the hose in and the red bit locks. My reg had one of these but I unscrewed it and my needle valve screwed straight into where the push fit had been. lucky me. lol

I have a solenoid like the one you linked to with the nuts that screw over the barbed inlet/outlet fitted inline. Very good. However mine is from Lunapet/Aquarianversand on ebay. Half the price and exactly the same in design.

AC
 

VaughnH

Lifetime Charter Member
Lifetime Member
Jan 24, 2005
3,011
94
48
85
Sacramento, CA
The description of the solenoid says:
CO2 Solenoid Valve

"This small and reliable valve is for use with a pH controller or timer to automate the input of co2 for natural planted aquariums or calcium reactors. For use with a regulator with reduced pressure below 5 psi. Spring loaded quick fit connections make it easy to attach co2 resistant tubing. Tubing slides right in for tight and secure connection"

I think the bold, underlined part is the problem. Our regulators rarely hold a 5 psi setting, and sometimes even a 10 psi setting isn't too stable. My guess (my latest guess!) is that your CO2 regulator outlet pressure is just way too high for the fittings the solenoid has.
 

kid creole

Prolific Poster
Dec 19, 2008
34
0
6
Raleigh, NC
No, I had a massive CO2 leak when the pressure was over 5 PSI. You could hear it. I identified this, and my CO2 lasted much longer. 3 weeks instead of 6 days. But I knew 3 weeks was too short, so i bubble tested the lines. It's leaking out between the hose and the red part.

At some psi over 5, it will leak whether open or closed.

Either way I am just going to buy the Clifford (or similar) today and be done with it.
 

kid creole

Prolific Poster
Dec 19, 2008
34
0
6
Raleigh, NC
Update:

I added the clippard solenoid, and no problems. The old solenoid takes a different kind of tubing. On the side of the solenoid it says it's rated to 25 psi. I assume they say to run it at 5 since they know it won't leak terribly fast at that pressure. BS, IMO.

Even more interesting, I left a review on petsolutions.com, where I bought it, clearly explaining the issue, and it never made it to print. Hmmm. I don't think I'll be shopping there again, if I can help it.