ryu1

I would like to get some advice on co2 diffuser. I have a regulator that has 3 way manifold. I am using one output atm on my 20Gal with an atomic diffuser that is set at 30psi about 2-3 bps. I will be adding a 4gal nano that I am also injecting co2, I have a cheap glass diffuser that I am planning to use for this tank. I am trying to get 1bps or less to this nano, and the concern I have is that since the atomic diffuser I have requires 30psi to push the co2 out, and if I am adding a glass diffuser to the second output that doesn't require much pressure to push co2 out, will I be able to do fine adjustment?? I know it largely depends on the needle valve (both will be standard Fabco nv) or I am better off getting another atomic diffuser for my nano? Thanks.

Left C

Good needle valves should allow you to run the atomic diffuser and a glass nano diffuser even at 30psi. Note that there are more than one version of the Fabco needle valve. The NV-55 has #10-32 ports, the NV-55-18 has 1/8" NPT ports and there are versions that have a slot for adjustment instead of the knob. Will the NV-55-18's fit on your manifold?

ryu1

I don't know the model, but the one that comes with gla choice reg. I haev the same nv for all ports.

Left C

I'm not familiar with how well GLA's 3x manifold with needle valves works. I've only seen pictures of it.

Do the needle valves hold their bubble count (flow rate) very good? If not, you will need to make this better.

If the needle valves are good, you can run a high rate on one valve and a slow rate on the other without any problems at your 30 psi setting or even higher or lower psi settings.

I have a Fabco NV-55-18, but I haven't tried it yet. I use Ideal's 52-1-12 needle valves. These do a very good job, but they are a bit more expensive than the Fabco's.

You can swap the needle valves out I do believe. Orlando might be able to fix it up for you. He has access to several different good needle valves.

Another option is to run an inline needle valve after the stock one. What you do is you turn the needle valve on the manifold wide open. Then you attach a piece of tubing. Now attach your new needle valve with barbs added. Now add more tubing and attach your bubble counter and the rest of the assembly. This allows the new and better needle valve to control the flow to whatever it is connected too.

Here is one of the Fabco NV-55's with barbs added.

ryu1

Thank Left C, I actually go and bought another atomic diffuser, so far everything seems to be running the way I want it. I was able to get 1 bubble every 2-3 sec.

Left C

That is great!

sketch804

i thought those atomic diffusers took more than 30psi to run!? Which one do you have? I am looking into getting one of these now that you are like the 3rd person i see using these with only 30psi..was it the boozoka one? Thanks!

ryu1

Had a used one from gla, and this is a new one I bought from amazon.
http://www.amazon.com/U-P-Aqua-Super...8375803&sr=1-1

This new one I guess take some soaking, not sure about the one from gla as I got it used. There aren't too much bubble initially, but it works great after a few days. I think most atomizer will work if you have 30psi.