Cerges' Reactor - DIY Inline CO2 Reactor - Page 55
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Old 02-19-2015, 06:12 PM   #811
andyl9063
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Originally Posted by Solcielo lawrencia View Post
How tall is the head height?
The tank is 6 ft tall. Probably a few more feet for additional piping if running straight through reactor.
I wonder if there's any downsize to this.
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Old 02-19-2015, 06:18 PM   #812
Solcielo lawrencia
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You'll probably need to restrict the outflow. Also, 1/2" tubing is really small. Not a lot of water volume means less pressure.
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Old 02-19-2015, 06:33 PM   #813
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I'll just stick with 1000 gph. Increase tubing size to 1 inch. We shall see what happens.
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Old 02-19-2015, 06:39 PM   #814
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Can you take a picture of the entire setup?
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Old 02-20-2015, 04:08 AM   #815
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Default Cerges' Reactor - DIY Inline CO2 Reactor

The 2000 GPH may be too much flow for your 4" reactor. The 1000 GPH may be a better option.
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Old 02-20-2015, 12:46 PM   #816
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The 2000 GPH may be too much flow for your 4" reactor. The 1000 GPH may be a better option.
i have a 20" btw.

So I upgraded tubing and fittings to 3/4 on input side of reactor. Hook it to quietone 4000 via 10 ft tubing with 991 gph. I left the eheim tubing on output side of reactor. The flow is tremendous and I had to dial it down using ball valve. I'm going to test co2 today since it got late last night.

I think the pressure is going to be really good.
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Old 02-20-2015, 02:11 PM   #817
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Default Cerges' Reactor - DIY Inline CO2 Reactor

It's only 4"wide, too much flow and all the bubbles just run right through the reactor. It sounds like your headed in the right direction, now just playing with the ball valve to get just the right back pressure.
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Old 02-20-2015, 02:20 PM   #818
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It's only 4"wide, too much flow and all the bubbles just run right through the reactor. It sounds like your headed in the right direction, now just playing with the ball valve to get just the right back pressure.
oh, i didn't realize it was 4" wide. But you are right about all the bubbles going right out of reactor. It was microbubbles which has been dissolved by reactor. The flow was really a lot, I'll play around with it today and see.
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Old 02-21-2015, 01:06 AM   #819
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Well there's one hour left in Co2 period and water level has not drop in reactor. How come no one mention a big pump is needed along with bigger tubing? I think it's going to work great now. I'll see what happens a few days from now. Thanks guys
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Old 02-21-2015, 03:55 AM   #820
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The original venturi reactor design that called for the 200 GPH pump was slightly less than 2" wide using a water changer tube.
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Old 02-21-2015, 06:36 AM   #821
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Quote:
Originally Posted by andyl9063 View Post
Well there's one hour left in Co2 period and water level has not drop in reactor. How come no one mention a big pump is needed along with bigger tubing? I think it's going to work great now. I'll see what happens a few days from now. Thanks guys
Because the understanding that pressure is required for dissolution only became known to the hobby last year. (It's not exactly dwell time that's important.) If you understand this concept of pressure, you can do things to increase it. Numerous ways to do it - I've suggested some.

A problem I suspect is the 20" housing (short return head height) + 1/2" tubing = very low pressure in the reactor. The pump output may be enough but the lack of pressure is the problem. Thus, a 10" tall housing may actually be better, though I am not certain.
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