New Discovery:
I'm blind AND lucky!
After refilling my Korallin reactor and cursing up a storm at the poor quality valves on the reactor tubing (they tend to leak at the top of the knob), I finally got it back online and started cleaning various areas of the sump/fuge. Noticed a huge amount of algae growth in the sump and realized that the two turbos I had in there had either quit and went looking for other jobs and better pay, or died.
While scraping the salt creep from around the top of the sump and all of the pipes (just trying to be neat), I noticed some drops of water on the union of the main overflow drain, right after the ball valve. I thought it might be from the drip hose from the reactor that decided to go "firehose" on me when I plugged the regulator back in (dont laugh, I know you've done that too!!
). After wiping it off and noticing that the water came back, along with it's resulting salt creep, I figured there was a problem with the union. Unscrewed the union and sure enough, there was no o-ring in it.
After digging around in my "leftover bin" for about a half hour (leftovers from the original build), sure enough, there was the o-ring. Popped it in, reconnected the drain, and off I went.
I'm lucky that didnt cause any major leakage in the eight months this tank has been running.
MAN, am I lucky!