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Old 06-30-2006, 04:45 AM   #1 (permalink)
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Default CO2 reactor efficiency...

First off, I wasn't sure where to put this thread...

Anyhow...

My reactor is working but I'm not sure how effeciently. I have to have a pretty good stream of CO2 (too many bubbles to count) for the pH to drop to where I want it. Do you think its my reactor? I have it hooked up to a seperate Mag 3 pump and the outlet of the reactor goes to a "T" on my return pump in my sump. Do you think this is creating negative pressure and not allowing the CO2 to not dissolve enough?

Yes, it is hooked up correctly... flow going from top to bottom, CO2 enters approximately 1/3 of the way down reactor... it is vertical...

Thanks!

Keith
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Old 06-30-2006, 06:31 AM   #2 (permalink)
 
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What size tank?

What's the kH?

What kind of reactor?
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Old 06-30-2006, 04:34 PM   #3 (permalink)
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Rex,

I sent you a PM before you replied to my message.

Keith
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Old 06-30-2006, 04:40 PM   #4 (permalink)
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Rex,

Tank size is 100 gallon.
kH is 7
Its a Rex Grigg special! Remember me emailing you about it? You said to make it 2" PVC and 24-28" total length... well, it is 21" total length. I have the outflow of the reactor going to the intake of the return pump in my sump. I was thinking of adding a ball valve on the outflow of the reactor in order to create some back pressure to dissolve more CO2 since it is connected to the intake of the return pump, there is very little pressure if any in the reactor.

Keith
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Old 06-30-2006, 07:17 PM   #5 (permalink)
 
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A couple of things come to mind. Reactor is too short and water flow might be too high. Or you could be losing it in the sump.
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Old 07-01-2006, 04:17 AM   #6 (permalink)
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First check how the water returns to the sump. If it splashes a lot or even if it creates a lot of surface agitation right there you are loosing much more CO2 than you think.

--Nikolay
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Old 07-02-2006, 08:00 AM   #7 (permalink)
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Niko,

The water coming from the overflow to the sump has one of those ribbed hoses on it which causes A LOT of water agitation as it cascades down into my sump. I am going to be switching that out and running PVC pipe this weekend to rectify that situation.

Keith
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Old 07-02-2006, 08:02 AM   #8 (permalink)
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Rex,

I increased the length of the reactor to 26" by cutting it in half and using two 2" couplings to add more length rather than building a whole new one. There is also a ball valve on the outflow side of the reactor that I can tweak to decrease water flow.

Keith
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