i had a "leak" from the under lip and I just sealed off with clear silicone.

Where do you get the clear silicone Lyndsey?

blue world usually has some, call them.. that and big al's

Fix it? lol Without draining the tank I'm not sure how I'd fix it. I'm running a herbie style drain so I took a 1/4" off my safety stand pipe and now my water almost never gets that high for the capillary action to start. That and I lowered my power heads down a bit so they don't create such a wave on the front pane. Thankfully with my tank the front edge of the trim is almost 1/2" lower than the inside of the tank so I was able to drop the water level that little bit and still not see the water line from the front. I do still get the odd dribble I have to clean up but for the most part it's ok.
I hope that helps a bit. Thankfully it's not something as serious as a tank leak. Irritating a bit but no more.

I had a bad dream last night about waking up to a pool of water in my living room. I am really glad it is not something as serious as a tank leak. The thought of cleaning up that pool of water and transferring everything from the old tank to a new tank made me cringe! :yield: