UP Aqua Inline CO2 Diffuser - The Planted Tank Forum
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post #1 of 6 (permalink) Old 04-06-2013, 12:16 AM Thread Starter
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UP Aqua Inline CO2 Diffuser

I've been using one of these for a while now (the larger one - looks like a small jar)

I was wondering if anyone's had experience with these. Seems like it requires a lot of pressure to diffuse, more pressure than my solenoid can handle. The solenoid doesn't stop anything after 60psi (AquaMedic pulse - I'm working on assembling a Burkert one to replace it with)

Also, if you own this, has it ever leaked on you? Woke up one morning and noticed my co2 tank went from ~600 psi to ~200 psi.
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post #2 of 6 (permalink) Old 04-06-2013, 12:33 AM
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Regarding the second part of your post, if your CO2 cylinder went from 600 PSI to 200 PSI, then I would not suspect the diffuser, but rather, a leak somewhere along the chain of equipment (regulator, solenoid, needle valve, bubble counter, etc). Don't forget to check the actual regulator/CO2 cylinder connection as well.

You can check that there is no leak with soapy water.


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post #3 of 6 (permalink) Old 04-06-2013, 12:36 AM Thread Starter
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Well before that happened it was running strong for 3+ weeks. Could any of my connections have loosened from pressure?

I'll have to test with soapy water... I bet something didn't like the high pressure I need to diffuse.
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post #4 of 6 (permalink) Old 04-06-2013, 12:44 AM
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Re: UP Aqua Inline CO2 Diffuser

Yep, it needs about 35psi of crack pressure. I've been using two of them for couple of years with no issues.

Increased pressure probably made your existing leak more noticeable or loosened a marginal connection. The higher the pressure the easier it is to find leaks with soap water.

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post #5 of 6 (permalink) Old 04-06-2013, 12:48 AM
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I'm using them as well, 40 psi works well for both of mine. I would think your solenoid should be able to handle 40 psi.

It sounds like you're leaking somewhere.
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post #6 of 6 (permalink) Old 04-06-2013, 06:51 AM
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anything over 45 psi on the diffuser is overkill. I'm using mine at around 35psi and it is more than enough.
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