This baby is virtually hassle free in comparison to other tanks. Particularly the sliding boro glass tanks. Ever since using this tank, it's just been smooth sailing with no leaks. I used to hate the idea of rubber seals but it's soooo much more convenient then those slide ones. Also don't panic, it comes with a black seal installed and the god awful bright green one as a spare.

No gaskets getting pinched, no glass slider getting super glued and no check atty warnings. It's solid and easy to fill. A time the rubber pluggy makes sense.