[frogmanjared]

Does anyone use something like this? If so, what are your experiences?
http://www.amazon.com/Rio-Plus-Vent...=1353874493&sr=8-4&keywords=venturi+powerhead
What is the flow rate on these? It would be for a 10 gal tank.

 

[m00se]

I have a supreme mag 7 with the venturi impeller and intake attachment. I also have the same pump without, and I don't see a lick of difference between the two for efficiency injecting CO2. I use a 20 inch cerges reactor. Hey! Give er a whirl and see how it performs!

 

[Kathyy]

http://s3.amazonaws.com/tc-photos/11442/product-alternate/giant/17.jpg
Might be more flow than you are looking for!

How about buying the smallest one and putting an airline tube between the venturi and the intake?

 

[ua hua]

I have a supreme mag 7 with the venturi impeller and intake attachment. I also have the same pump without, and I don't see a lick of difference between the two for efficiency injecting CO2. I use a 20 inch cerges reactor. Hey! Give er a whirl and see how it performs!

There might not be a huge difference in the efficiency of injecting CO2 but there is a big difference in flow rate between the mag7 with a fractioning impeller and one without. I use a mag7 with fractioning impeller ran dual venturi method style through my reactor and the other mag7 for my return from my sump.

 

[hunterlook]

I'm running the Rio+ 200 in my 10 gallon also doubling as my CO2 diffuser. The flow rate is fantastic for that size tank and it's fairly inexpensive ($20 I believe). Granted, I also have a tetra EX30 filter that gives my great flow for the mid-top range of the water. I have my Rio mounted in the bottom corner of the opposite side of my filter and it's amazing. It also produces very tiny bubbles of CO2 that take quite a long time to float to the top and often have time to stick to my plants. Very happy with the results.

 

[kevmo911]

Barr Venturi Reactor