It's just a standard threaded 1" bulkhead - on the outside of the sump is a barbed insert adapter I picked up from home depot and reduced it to 5/8" with clear tubing and hose clamp. The tubing goes into the wall, through my crawlspace into the backyard.
On the inside is one of these:
http://www.drsfostersmith.com/product/prod_display.cfm?c=3578+10090+8022&pcatid=8022
so if I point it straight up the water line would be at max height, but if I turn it down a little it can lower the water line. Mainly I did this because this is my first
experience with a sump and wasn't sure where I wanted the waterline. This gives me close to 2" of adjustment for the waterline.
If this isn't clear I can snap a pic when I get home tonight...
Your progress is looking good!
Here's some pics of that overflow I made as part of my auto drip system that should explain it better
View attachment 719070
View attachment 719071
View attachment 719072
I do the same thing with a 90 elbow coming off my drain bulkhead inside my sump. I add a PVC pipe to my 90 pointing straight up to adjust the water level I cut the pipe. Your system is way better! But once you have the water level worked out there's no more adjustment needed.
Good MorningDid you combine the returns from the canisters and each sump? How is your external overflow box drilled? Are the holes for 1 1/2" drains and 1/2" return pipes? Also, what all came with the plumbing kit for your tank? Just bulkheads and return nozzles? (I can't get in my tank yet to retrieve whatever is in there)