Yes, it is at James' house. I found out from someone iquiring about my red colt coral frag.
I simply drille da 1.5" hole about 2" fromt he top. Got the necessary bulkheads from Lowes. One with a threaded end that is on the inside of the tub, the other with a non threaded end for attaching the PVC to the sump.
After drilling hte hole and threading the threads intot he tub, i siliconed around the entire opening and then some to make sure it would not leak. Got a cap that I screwed onto the threads inside the tub and let is cure for 24 hours.
Hope that helps. it's the best this novice can describe.