I thought my HC bub from aliex had a crack in the downstem portion, looks a lot like a crack, but it also could just be a poorly made weld, that appears to be a crack. I have not seen any evidence of the area being weak so far. Not saying yours is the same way Deadshort, that sux if you got one on the perc, though I couldn't really tell in the vid, maybe it helps if you know where to look. I've been using another cracked piece sucessfully for months, it has a huge crack going though the bottom of it, but so far has maintained its integrity and stayed water tight, though its also american made 5mil glass so I don't know if the comparison works in this case. None the less, its a nice little bub, glad yours showed up, hope your crack stays put a while so you can get some enjoyment out of it.