I'll piece the rest of it together when I get back (out of town this week). It'll take about a week or so before that happens since I can't find the correct size tee around here.
The idea actually didn't derived from Tom's microbubbles discussion. It was from seeing the diffuser in action over at Aqua Forest. The diffuser, pictured, puts out really minute bubbles. Most of the bubbles are usually gone by the time that it hits the surface (the others get pushed around the tank). So, in that sense, it would be similar to Tom's idea.
The reason that I'm making a new reactor is due to the inefficiency of the current reactor. It gets plenty of CO2 into the tank, but by cranking up the bubble count, sometimes it empties the bubble into the tank. After seeing how the diffuser works, I was pretty set on putting one into an external reactor (removes it from the tank altogether).
As for testing it, that would have to wait. I'm currently out of town and the tank isn't fertilized for the moment. I'm expecting to see the system out of wack by the time that I get back and have to wait until it reestablishes balance (that might have to be the next set of upgrades - some dosing pumps).
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Eric
 
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