So you thing bulkheads with union fittings in the middle of um would be best then? I was thinking that too but was trying to stay cheaper then 3" bulkheads those are $$s kinda sucks
Yup thats how I've seen them done and how my father does it. He used uniseals before but leaked eventually. Tons of people do this for rain barrels for plants and etc. Watch this video and it will be so much easier since your barrel should be open top and not closed like the video.