Splitting CO2

scottward

Guru Class Expert
Oct 26, 2007
958
10
18
Brisbane, Australia
Hi,

What is the best way to split CO2 to feed into 2 different locations? I would like to feed some CO2 into my AM1000 and also some CO2 into an in tank powerhead for a little misting action.

Currently, I have it connected up like this:

CO2 bottle -> Regulator -> Solenoid -> Needle Valve -> Bubble Counter -> T-piece
- branch 1 goes to AM1000
- branch 2 goes to a second Needle Value -> powerhead

I get a good balance for a while, but, eventually the back pressure (I suppose) changes somewhere; then the AM1000 gets all the flow.

Would I be better of splitting immediately after the solenoid when the gas pressure is higher, and perhaps feeding into 2 parallel needle value/bubble counters?

Or do I really need a regulator with dual outputs? ;-) I think I already know this is the best way to do it - but is there a reasonable alternative with the parts I already have?

Scott.
 

argnom

Guru Class Expert
May 24, 2009
109
0
16
Montreal, Canada
I've tried it before, the best way I found was this way:

CO2 bottle --> Regulator --> Solenoid --> T --> 2 needle valves --> 2 bubble counters

That is if the lights on both tanks have the same schedule.

If not, I would proceed this way:

CO2 bottle --> Regulator --> T --> 2 solenoids --> 2 needle valves --> 2 bubble counters

Hope this helps.
 

Left C

Lifetime Members
Sep 26, 2005
2,500
1
36
69
Burlington, NC
Here's some pictures of fordtrannyman's regulators that feed multiple tanks. These are similar to argnom's first example except they are feeding more than two aquariums.

ftm3x1.jpg


ftm5x2regulator.jpg
 
Last edited by a moderator:

dutchy

Plant Guru Team
Lifetime Member
Jul 6, 2009
2,280
4
36
61
The Netherlands
I had the same problem as you. One was working or the other. Now I'm using two separate systems. Double bottles last twice as long. They never get empty at the same time.

regards,
dutchy