Gla$$hole overflow flange leaking - appreciate quick responses
I have just finished setting up a single overflow on a 33 Gallon Mr. Aqua, and have a small leak where the flange butts against the outside glass. From the outside, the assembly is as follows:
Flange => gasket => aquarium glass => gasket => overflow box => nut
Before assembly I sanded the mold marks on the surface of the flange so that there were no burrs or leak paths, but could still feel a slight unevenness on the surface, like a slight wave. Thinking this is the problem:
- Disassembled, sanded the flange some more (220 grit, followed by 400, followed by wet 400), assembled, leak - very small, but leak
- Repeated the above, leak
- Thinking that the flange surface needs to be true and perfectly flat and not only smooth, I took the guide the Gla$$hole provides for cutting the glass (the small board with a hole in it) and cut the exact same size hole on sandpapers and made a flat sanding board. Followed the same process as above: 220, followed by 400, then wet. Assembled, nothing for 25-30 min, then a small drop
- Repeated the above, same thing.
- In the process, I rotated the gaskets between inside and outside (I actually have a spare gasket, so rotated all three
- Doing some research, some recommend not using Magic Lube (which I had before), so I wiped the gasket and surfaces clean with alcohol and get the same thing
- I really don't believe I have over tightened. Hand tightened the best I could give the confined space, then used a tool to tighten maybe another 1/2 turn
At this time is was way past midnight so given that the leak was very small, I wrapped a rag around the joint and went to bed. This morning the rag was wet.
I am at a total loss with this thing. I can't empty the tank since it's planted, and every time I disassemble it I have to drain the tank to half, a royal PITA. Any suggestions as to what I should do next? I have now wrapped a rag around the joint while I figure out my next step.