Venturi Line on a Rex Style Reactor
I am going to build an external reactor to plumb in-line with my Fluval and am trying to decide on the design. I imagine in general it will be based on a rex style reactor. I have read a number of posts on Tom Barr's reactors that include a venturi line to outlet collected gases. However, these were internal reactors. Has anyone included a venturi line on an external reactor? Is it necessary with a rex style reactor?
On a separate note, it seems that some people at bioballs to help diffusion. For those that don't, are you getting adequate dissolution?