So I plan to upgrade my PICO tank and was thinking about doing a sort of experiment. Wanting to run a reactor (chaeto) in line with the return of an AOI. I have one something similar when I ran a Canister filter as the return for an AOI, but I was kinda lucky in that all of the plumbing sort of worked out. If I use a BRS reactor are there specific bulkheads I can use or was to convert the return to lok line?