Maybe someone that has made a reactor or two or bought one from Rex Grigg or whatever his name was will jump in here and start saying what not about how degassing is not a problem.
Go find my long thread about how to stuff a co2 tubing in a suction of a little pump. Genius at work... Wish I never posted that thread because it helps cheap people belittle this hobby with a cheap mindset.
And yes - degassing IS a problem, in case you still have not figured I like sarcasm. What you see as accumulating gas is not CO2. Where did you get the idea it is? Your water contains other gasses. That is what you have to deal with.
niko I completely agree with you except for degassing since I don't have a way to confirm what gas is that accumulates in the reactor but my money would be on "not only CO2" mix of gases.Please if YOU can post here that link about tubes and pump that you've mentioned I wanna check it.
The AM1000 has a little valve on top that you leave crack open , you run the co2 hose from there to the pump and all gas will be reused an dissolved 100% . I've gotten 100% co2 diffusion with this setup. I guess it could also work with CarbonDoser EXT5000 (External Reactor 5000) if need be.