Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Did the job, but it's already broken :(

I have only owned this item for a few days. The red line to me was pretty hard to see, but once I got done moving around enough I could find the temp easily enough. Well, the first time I went to clean the tank I tried to remove the thermometer from the side of the tank and the suction cup had it in there so tight that the thermometer simply snapped in half. There was a bad smell in the air like gas for a moment, but I just washed it down the sink and threw the thermometer end away with most of the "red" inside. I dont know if it was mercury or not, who knows. But I am disappointed that the glass is so thin :( Now I have to buy another one and this time Im going to find something preferably more solid. Yeah it will work for your tank, me myself would suggest a more quality product.