Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Tank cracked open, replacement did, too! This time, bad deal.

Everyday I used two Holmes humidifiers, smaller ones than this model. I've used them for two or three winters, storing them in the summer, and I've had great results. That's why I usually buy a Holmes product, when the choice is to be made.This time, though...hmmm. Bad luck. At first, the unit seemed to run perfectly. Though, I did think that I heard a 'crack' when I was filling the tank, the first time. Anyway, after a week or so, all of a sudden I noticed that the humidifier had gone to 'reset' and the tank had cracked all over like broken glass -- a bit of water had leaked out, too.I ordered a replacement tank. That cracked after the first use.I'd been convinced that the problem was the tank -- not the main 'engine.' But, perhaps I got a bad unit and any tank would crack on it. There was nothing to indicate that, though -- it seemed to be running fine, until it cracked.