My Mag5 developed a very slow leak, about a tablespoon a day, but it was slow enough that the water that leaked out evaporated and didn't pool in the bottom of my enclosure. I think I topped it off every couple days for about a month till I decided to rebuild the system and use temporary air cooling. The main problem I see with the Mag housing is that the four corner locations contact the face before the center sections thereby putting less pressure on the o-ring in those positons. I wonder why Danner doesn't just make a revision that fixes that.
