Thanks for the info.
For the last baffle that will hold my return pump, in the flow of things it supposed to have the water flow over from the top. Is that the best way to do it? Would that not cause CO2 to be lost and make it loud? Would it be better off to make that baffle under, is that an option for the return pump area?
The other questions can I have any baffle be the same, like if I want to put something in the middle of 2, and just want the flow to be over the top of both, or is that not a good idea?