not my idea of fun today. Found a trickle on one of my 2” rain bulkheads this morning. I can’t properly tight a new bulkhead on behind the tank since there is not enough clearance so I’m currently draining. 
No problem, thanks for the quick tag. Use the flat side of the gasket against the material wall (flat glass or acrylic). The circle side on the under side of the flange, on the bulkhead fitting.
Your a life saver dude! I thought it was that way but was second guessing myself. Ended up draining the tank to about 6” of water for the fish and running a bubbler. My syns pair are freaking out. But I got the tank away from the wall and put a new bulkhead in and added hose to replace the old pvc. Think I bumped it hard last week after a waterchange or something. Leak testing my overflow box and so far so good after about 20 minutes. Getting ready to move tank back to the wall and fill up. Need to go get more prime
lol I didnt either so dont worry. Its always the simple things that trick you!
Rule of thumb is hand tight and then a quarter turn. Usually with a pair of channel locks or a large wrench. I have a few that are just hand tight and do not leak. You can usually muscle it tight.
