Need help ASAP with CO2 set up - Page 2 - The Planted Tank Forum

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post #16 of 38 (permalink) Old 04-04-2013, 01:21 AM
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Need help ASAP with CO2 set up

Normal is subjective. I think it all depends on how your system is designed. My system uses a more efficient way of delivery so I don't need to use a lot of output. The Parker website (http://www.parker.com/portal/site/PA...EEDLE%20VALVES)
says that their valves can handle operating pressure of up to 150 psi unless otherwise noted. I would check the model just to be sure. If you only recently added the diffusor that could be the problem. It may not provide the resistance that the previous one did or it could be faulty. I have had several faulty ones myself.
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post #17 of 38 (permalink) Old 04-04-2013, 01:23 AM Thread Starter
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Need help ASAP with CO2 set up

Quote:
Originally Posted by byork View Post
Normal is subjective. I think it all depends on how your system is designed. My system uses a more efficient way of delivery so I don't need to use a lot of output. The Parker website (http://www.parker.com/portal/site/PA...EEDLE%20VALVES)
says that their valves can handle operating pressure of up to 150 psi unless otherwise noted. I would check the model just to be sure. If you only recently added the diffusor that could be the problem. It may not provide the resistance that the previous one did or it could be faulty. I have had several faulty ones myself.
It's actually a metering valve but they seem to be able to handle a lot. And no I've had the diffuser a few weeks, worked fine until today


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post #18 of 38 (permalink) Old 04-04-2013, 01:37 AM
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Need help ASAP with CO2 set up

Well IMO it's the valve or the diffuser if you have ruled out leaks etc. Also a blockage i.e. Teflon tape could cause problems with the valve packing, ferrules etc. You could just dial back the pressure from the regulator open the valve and try again.
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post #19 of 38 (permalink) Old 04-04-2013, 01:39 AM
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What's in your bubble counter? Mineral oil can kill an atomizer.

You checked all of the connections in the tubing, all over the bubble counter and all over your check valve? The gas is going somewhere... Just not in your tank.

An easy way to rule out your metering valve is to remove the tubing from your bubble counter and make a range of adjustments and see if it functions as expected.

What would Honey Badger do?
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post #20 of 38 (permalink) Old 04-04-2013, 01:47 AM Thread Starter
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Need help ASAP with CO2 set up

Quote:
Originally Posted by byork View Post
Well IMO it's the valve or the diffuser if you have ruled out leaks etc. Also a blockage i.e. Teflon tape could cause problems with the valve packing, ferrules etc. You could just dial back the pressure from the regulator open the valve and try again.
I'd agree its one if those. I'm soaking the diffuser in H2O2 to hopefully break up anything that might be in there.

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What's in your bubble counter? Mineral oil can kill an atomizer.

You checked all of the connections in the tubing, all over the bubble counter and all over your check valve? The gas is going somewhere... Just not in your tank.

An easy way to rule out your metering valve is to remove the tubing from your bubble counter and make a range of adjustments and see if it functions as expected.
Nope it's just water

Yup I checked everything and no leaks. I checked twice. I took off the diffuser and stuck the tubing back in the water and the bubbles do actually react from my adjustments.

Seems like the diffuser is all that's left?


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post #21 of 38 (permalink) Old 04-04-2013, 06:32 AM
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If, without the diffuser, the bubbles entering your aquarium are (about) the same as those that you observe in the bubble counter, one would conclude that it was indeed, your diffuser.

In any case, at least you seem to have solved the problem.

On another note, I think you have a single stage regulator and a dual stage regulator. I do not know of any dual stage regulators that screw on to a CO2 cylinder from the back (the size also seems quite small).

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post #22 of 38 (permalink) Old 04-04-2013, 06:46 AM
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Need help ASAP with CO2 set up

Based from the pic I believe it is a single stage Milwaukee regulator.
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post #23 of 38 (permalink) Old 04-04-2013, 07:01 AM
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scratching my head...

if there is no leak, and regulator output pressure stay the same, but the flow(bubble rate) rate jump, only means the back pressure(pass the metering valve) drop significantly.

Did you wait at least 5 minutes to get the right bubble rate after you adjust the metering valve?
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post #24 of 38 (permalink) Old 04-04-2013, 11:59 AM Thread Starter
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Need help ASAP with CO2 set up

Quote:
Originally Posted by Darkblade48 View Post
If, without the diffuser, the bubbles entering your aquarium are (about) the same as those that you observe in the bubble counter, one would conclude that it was indeed, your diffuser.

In any case, at least you seem to have solved the problem.

On another note, I think you have a single stage regulator and a dual stage regulator. I do not know of any dual stage regulators that screw on to a CO2 cylinder from the back (the size also seems quite small).
Well actually the bubbles are going out at a much slower rate than the bubble counter when I had just the tube in the water. Could there be something wrong between the bubble counter and the diffuser? Maybe some blockage?


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post #25 of 38 (permalink) Old 04-04-2013, 12:14 PM Thread Starter
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Need help ASAP with CO2 set up

Quote:
Originally Posted by Mathman View Post
Based from the pic I believe it is a single stage Milwaukee regulator.
It is indeed


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post #26 of 38 (permalink) Old 04-04-2013, 12:16 PM Thread Starter
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Need help ASAP with CO2 set up

Quote:
Originally Posted by Bettatail View Post
scratching my head...

if there is no leak, and regulator output pressure stay the same, but the flow(bubble rate) rate jump, only means the back pressure(pass the metering valve) drop significantly.

Did you wait at least 5 minutes to get the right bubble rate after you adjust the metering valve?
That seems like the most spot on description this far. Any idea what could have caused it?

I usually waited at least a few but this valve seems to adjust pretty fast. It was hours of adjusting last night though since I was fiddling with the damn thing


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post #27 of 38 (permalink) Old 04-04-2013, 12:19 PM
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Need help ASAP with CO2 set up

That would indicate a leak. Were you able to check the top of the bubble counter with soapy water without turning it?
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post #28 of 38 (permalink) Old 04-04-2013, 12:25 PM
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Man, I would definitely drop that working pressure some.
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post #29 of 38 (permalink) Old 04-04-2013, 12:27 PM Thread Starter
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Need help ASAP with CO2 set up

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Originally Posted by byork View Post
That would indicate a leak. Were you able to check the top of the bubble counter with soapy water without turning it?
Which part indicates a leak?

And yes I checked that soaked the upper but with soapy waters and it just sat there, no bubbles at all. Should I try taking it apart and reattaching it?

Quote:
Originally Posted by gSTiTcH View Post
Man, I would definitely drop that working pressure some.
What would you recommend?



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post #30 of 38 (permalink) Old 04-04-2013, 12:39 PM
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Need help ASAP with CO2 set up

Honestly I wouldn't even use a bubble counter. They are notorious for messing stuff up and mostly for aesthetics. If you feel like you need one try a cheap in line type.

What type of check valve do you have between the metering valve and the bubble counter?

The drop in pressure/output between the bubble counter and the end if the hose indicates a leak. Although the size of the bubbles at each location is probably different so you need to take that into account.
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