Just planning ahead on my next project. I'm contemplating on experimenting with a sump this time. What do you suggest on bulkheads? Threaded/threaded, slip/slip or threaded/slip? Thanks.
You can make your own bulkhead with male and female PVC bushings (I think home depot calls them adapters) and a gasket. If you're going through thick glass/acrylic it might not work cause I think theres only about an inch of threads. I've seen some longer though.
I agree with jcardna1, whenever I get bulkheads I try to get threaded outside and in. Much more flexible if you ever want change, and I find change to be the norm, not the exception.