Having an issue with my ceramic disc - The Planted Tank Forum

 
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post #1 of 10 (permalink) Old 04-08-2013, 10:00 PM Thread Starter
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Having an issue with my ceramic disc

So I got a new diffuser because it appears my old one decided it hated its life and died.

Good news is I got a new one! Even better news is that it works! Problem is that the stupid disc only spits out bubbles from one side, rather than misting.

I was advised to keep my PSI low as possible to save CO2 so it's set at just below 20psi and I'm pumping out 1 bubble per second now.

It seems like its a little in debate. It's either poor quality (although it was from GLA) or clogged OR it could be not high enough in pressure.

Any thoughts?

PS - it's an aqua-up.com or up-aqua.com nano diffuser from GLA

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post #2 of 10 (permalink) Old 04-08-2013, 11:14 PM
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how big are the bubbles coming from the side? my diffuser was bubbling from the side with bubbles bigger then this . so I dried my diffuser and put some super glue around the part that was leaking. That seems to have fixed my problem.
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post #3 of 10 (permalink) Old 04-08-2013, 11:27 PM
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the gas is finding the path of least resistance. It just so happens that the pores on one side of your disk are harder to pass through than the other side. I would imagine you can bump the PSI up and you may start seeing bubbles on the other side, but then you might be using too much CO2 or in my case, the small bubbles came out so fast they combined into a larger bubble and reduced its ability to dissolve readily.
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post #4 of 10 (permalink) Old 04-08-2013, 11:31 PM
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bump up the pressure. Keeping the pressure low isn't saving you anything. You need to get a certain volume of gas into the water, period. Low pressure just means you need a higher flow rate to get the same volume. If anything, you're losing gas through inefficient diffusion if the bubbles are larger than they need to be due to low pressure behind the ceramic disc. Try increasing the pressure and closing the needle valve to compensate.
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post #5 of 10 (permalink) Old 04-08-2013, 11:37 PM Thread Starter
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Having an issue with my ceramic disc

Quote:
Originally Posted by mfurufuru View Post
how big are the bubbles coming from the side? my diffuser was bubbling from the side with bubbles bigger then this . so I dried my diffuser and put some super glue around the part that was leaking. That seems to have fixed my problem.
Seems to be a standard fix. Any recommendations?


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post #6 of 10 (permalink) Old 04-08-2013, 11:46 PM
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Quote:
Originally Posted by Mumford View Post
Seems to be a standard fix. Any recommendations?


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In terms of super glue? Any kind of cyanoacrylate glue will work.

Anthony

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post #7 of 10 (permalink) Old 04-08-2013, 11:54 PM Thread Starter
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Having an issue with my ceramic disc

Quote:
Originally Posted by puopg View Post
the gas is finding the path of least resistance. It just so happens that the pores on one side of your disk are harder to pass through than the other side. I would imagine you can bump the PSI up and you may start seeing bubbles on the other side, but then you might be using too much CO2 or in my case, the small bubbles came out so fast they combined into a larger bubble and reduced its ability to dissolve readily.
I'll try it!

Quote:
Originally Posted by TwoTacoCombo View Post
bump up the pressure. Keeping the pressure low isn't saving you anything. You need to get a certain volume of gas into the water, period. Low pressure just means you need a higher flow rate to get the same volume. If anything, you're losing gas through inefficient diffusion if the bubbles are larger than they need to be due to low pressure behind the ceramic disc. Try increasing the pressure and closing the needle valve to compensate.
Good call on that, didn't even think of that.

Is it safe to bump it up to 30?


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post #8 of 10 (permalink) Old 04-08-2013, 11:54 PM
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Are the bubbles coming from one side of the disk or the gap where the ceramic meets the glass?
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post #9 of 10 (permalink) Old 04-08-2013, 11:55 PM Thread Starter
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Having an issue with my ceramic disc

Quote:
Originally Posted by puopg View Post
Are the bubbles coming from one side of the disk or the gap where the ceramic meets the glass?
Looks like the gap.

Kicked it up to 30psi and no change. Looks like superglue is on my list


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post #10 of 10 (permalink) Old 04-08-2013, 11:56 PM Thread Starter
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Having an issue with my ceramic disc

Quote:
Originally Posted by Darkblade48 View Post
In terms of super glue? Any kind of cyanoacrylate glue will work.
Thanks!


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