Thanks for your input , it all helpsHi all, i've been following this thread with interest from the start and got my reactor a few weeks ago.
I was waiting for the verdict on the venturi but set it up on my 350l as it comes out of the box. My CO2 is on a separate loop to my filter driven by a 3000 l/hr pump and I have always had micro bubbles whichever diffuser i've used .
I connected up and tweaked the inlet to achieve the best vortex and did the usual pH profile. Took about 2 hrs for a drop of 1pH. No bubbles in the tank and just few in the reactor initially but after a couple of weeks it was difficult to see any in the reactor. I don't see any build up of gas at the top of the reactor , just inside the dome.
I have kept the pump on full speed to maintain the throughput but might experiment with reducing the speed to see if that affects the buildup in the reactor.
Hope this is useful to somebody thinking of trying a reactor without having to modify anything.
Like this which I had from @Andrew ButlerRather than cobbling something together for the Venturi has there been any discussion about ‘Venturi Eductors’ because chances are you may find a suitable candidate out there to buy.
There was a bit of a variety in the box if I remember correctly, there might be another but still the same problem, I can't remember where I got it from but theTBH I had forgot I had it, I may try it at some point
but remember water pushing through and Venturi or any body of water will put excess force on your filter pump and is more suited to a separate pump
@Wookii If you want to push this even further you can reduce the venturi tube size by slightly melting it to reduce its diameter. Alternatively you could simply use a valve like this and slightly close it.
View attachment 174785
This will have the effect of making much finer bubbles hence increasing the contact area of CO2 vs water.
That's because you created a weak venturi. I think the only way this would work at the outlet end is if you did something like this:I did try this at the outlet end of the venturi inside the clear elbow, by partially blocking the end of the tube, and I couldn't get it to draw air.
|F||Co2 external reactor ! It now or never||Carbon Dioxide (CO2)||0|
|Co2 reactor air||Carbon Dioxide (CO2)||24|
|Aquamedic CO2 reactor+||Carbon Dioxide (CO2)||4|
|F||DIY CO2 reactor.||Carbon Dioxide (CO2)||7|
|A||Internal co2 reactor that isn’t inline?||Carbon Dioxide (CO2)||6|
|External CO2 reactor or DIY||Carbon Dioxide (CO2)||25|