BOYU BT-01 Glass Thermometer for Aquarium

I tested this thermometer against a digital one and it was extremely accurate. The glass surface makes it easy to clean and doesnt cloud like plastic sometime does, and is very visible and easy to read. The suction cup is strong and sturdy. It is big enough to be readale but not so much that it is distasteful in the habitat, it doesn't bother my beta fish at all. The glass is sturdy so is not easy to break.

nice small size for my 5 gallon fish tanks. accurate temp, good suction cup. I ordered 3 one arrived DOA but was quickly replaced. solid 5 star experience, 4 star quality, suction came loose once in water flow but has stayed put since.

It's a little aquarium thermometer, what else can I say. It works great and the suction cup stays in place. I did catch some fuzz growing on the suction cup the other day; but I'm not sure if that was something in my tank or the suction cup's fault, and it cleaned right off so I'm not too worried about it.

I can't figure out if my heater is defective or if the thermometer is. I bought two of these. One from my 29 gallon tank that is at my mom's house and one for my 56 gallon tank that I have at my own house. The one for my 29 gallon tank reads out the same temperature that my heater is set to. The one of my 56 gallon tank reads out 10 degrees lower than what I have my heater set to. Mind you this is a brand new Fluval heater that I have as I bought both when I was setting on my new tank. So for now this gets 3 stars until I figure out if my heater is defective or if the thermometer is defective.

These arrived in a timely manner, but not a single one of them shows the right temperature. All 3 appear to be defective items. One thermometer reads out consistently near 100 degrees F, regardless of the temperature of the water it's placed in, the other two register temps a few degrees lower than actual temperature. A few degrees can make a HUGE difference for tropical fish, so these items are not only non-functioning, but could prove VERY dangerous for someone who doesn't bother to test them before putting them to use.

works well , nice and sturdy functions like mercury thermometer , MOST of you will not have an issue but only drawback is if your 50+ and have bad eyes like myself its printing is a little small to read other than that fine and functional

This goes in my fisk than great. The suction could be a little better

The thermometer works well , but I have allot of circulation in the tank, and the thermometer shakes and hits the tank wall continually .