Would this work for injecting C02?

M

Mooch28

AC Members
Dec 24, 2004
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Toronto (Brampton)
Hey guys,

I asked a simular question before and i got a lot of help from here, but that one involved using a hagen reactor as well as a zoomed pump, but now im wondering if this would work.......

Ok so i take the line (tubing) from my C02 regulator and put it straight in the Venturi aerater on top of my pump which sits just above the power head (clear white tube). This way the C02 would go straight into the pump, and be minced up by the propeller and thrown out in much smaller bubbles that could be asorbd by the water easier. Having the pump, i would save atleast 20+ bucks doing this and not having to buy a additional reactor, but would this work? Id probably have drop the pump to the bottom of the tank, but that can be done as the pump is submersable.....anyways, heres a pic of the pump i have, which is capable of pushing 270 GPH.

http://www.marinedepot.com/md_viewItem.asp?idProduct=MZ3117
 
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Would this work......

jan.jpg


The bubbles would basically go into the filter, throught the media, be chopped up and come out in fine bubles. Am i dreaming? :idea2:
 
If, by the 'venturi aerator' you mean the small tube that sits on top of the water return
then the answer is no. The gas will not go into the power head impeller that way.
You need to feed the gas into the bottom of the pump where the water intake is. It will then be sucked up into the impeller, chopped up and pushed out into the water table as a fine mist.
The lower you place the power head in the tank, the more absorption you will get, because the mist coming out will have further to travel in the water before hitting the surface to gas off.
In your picture it looks to me like you are running the tubing into the correct spot on the uptake tube of the filter or power head. Venturi aerators are typically located on the return of the power head.

Len
 
djlen said:
If, by the 'venturi aerator' you mean the small tube that sits on top of the water return
then the answer is no. The gas will not go into the power head impeller that way.
You need to feed the gas into the bottom of the pump where the water intake is. It will then be sucked up into the impeller, chopped up and pushed out into the water table as a fine mist.
The lower you place the power head in the tank, the more absorption you will get, because the mist coming out will have further to travel in the water before hitting the surface to gas off.
In your picture it looks to me like you are running the tubing into the correct spot on the uptake tube of the filter or power head. Venturi aerators are typically located on the return of the power head.

Len
Click to expand...

Thats actually not my tank, but rather a pic i found on the net of someone doing it that way. I here your canister filter can get real noisy though. Ill probably have to try the small water pump method first as you suggested too me.....
 
RTR said:
That is why I do not use that technique - I am neurotic about noise. Plus I would worry about air-locking the impeller.
Click to expand...

Ya, ive heard the horror stories or read up on them. Last thing i want. I can stand a 50 dollar pump going down, but not a bilogically set canister filter which costs much more.........
 
AC 402 power head.....about $15 at Big Al's. It will do a nice job and circulate the tank nicely as well. A very strong pump.
I don't think there would be much noise in a cannister, but the gas/air lock risk is a strong possibility when feeding on the intake side. If you ever decide to inject in conjunction with your cannister, do it with an in-line reactor on the return end.

Len
 
I saw a set-up somewhere(maybe here) where a guy made a diffuser out of PVC pipe filled with Bio-Balls and placed it on the outtake of his canister filter. It was placed so the water would push down at about a 45 degree angle and then up to the tank.

He stated it was very quiet and he got 100% mixture of the CO2 into the tank water.
 
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