Rex Reactor - what the heck am I doing wrong?
So I've built three of these now.
Actually, I've built more like 7 or so. I have three in service at the moment.
On my 90g Monsters, I'm using 2" PVC. The pipe is about 16 or 17" long. With the fittings, they stand about 22" or so. I think.
I'm running them on a 500+ GPH pump. Yes - flow from top down, CO2 Tube inserted in the correct place, etc.
I get bubbles. Albeit small ones, but bubbles.
On my 29g with the Eheim 2217 and spray bar, I get them too. This Rex Reactor one is using 1.5" pipe - about the same length. I get bubbles out the spray bar, and because the spray bar is so close to the surface, I get teeny bubbles on the surface... no champagne. I can't imagine that being better than a diffuser that was at least getting bubbles into the column.
I've read they blow bubbles at first. OK. I've been waiting. I've been shaking. I re-built and re-drilled the hole for the CO2 hose pull-through to make it even smaller and tighter - in case I may have been introducing bubbles in from that inlet.
Widespread reports of their successful diffusion of gas into solution and I've not found that to be the case. My oldest has been in service for nearly 10 days. The most recent about a week.
What am I doing wrong? Are they TOO long? Is there only a, say 50% or 75% diffusion rate to be expected, and there will always be at least some bubbles?
Any assistance would be appreciated.