I despise the stink in the debris that collects at the bottom of CBs so I have filled all of mine with concrete to eliminate all standing-water. If you have an opportunity to do a 6-inch setup then you could use small sections of the black-UV pipe that is sold for riser-pipe. My local HD has 2ft sch35 pieces of 6-inch UV pipe that I'll be using as discharges/outlets.
I despise the stink in the debris that collects at the bottom of CBs so I have filled all of mine with concrete to eliminate all standing-water. If you have an opportunity to do a 6-inch setup then you could use small sections of the black-UV pipe that is sold for riser-pipe. My local HD has 2ft sch35 pieces of 6-inch UV pipe that I'll be using as discharges/outlets.