Well, it was just dripping a drop every few minutes until I took the return hose off the hose barb and removed it, cleaned off the old teflon tape, installed new teflon tape and some magic lube and retightened it. That's when I heard the crack sound. There's a nice 1" long crack in the side of the bulkhead on outside of the tank where the hose barb for the return screws in. It's totally toasted now. It probably had a hairline before, I bought the tank used and it shouldn't leak at all if it's snug with teflon tape on it.
I went to the 24hr Walmart got a Whisper 30-40 internal filter to go along with my 2 WP10 pumps and I moved the heater inside the tank. I drained the sump because I really don't want to pump that stagnant water back up to the tank after it sits for a couple days. I just make 10-15 gallons of water to do a good water change after this event, I have plenty of buckets. I think I bought myself a few days with with some mechanical filtration. I'll try to get a hold of B from UA tomorrow and call Ayer Sales in Woburn. I know they'll definitely have it, they sell plumbing supplies to water filtration companies. They've never not had a part in stock when I'm repairing a lobster tank.
I'm a little paranoid about leaks. There years ago I left my RODI filter on, flooded my downstairs neighbor's condo and caused $10k worth of damage. The insurance paid for it but I now have a heighten level of caution. I get along with my neighbor, she's cool but having another event probably would go over to well.
