Review on Stay Informed About Water Temperature With Blufree Floating Pool Thermometer - Perfect For Pools, Baths, Spas, Hot Tubs, Aquariums & Ponds by Dave Wolf

I was happy when I first received this. Then over 6 months time i discovered:a) the string rots in a bromine hot tubb) you can only read the temperature when the water magnifies the blue liquid against the numbers, and that is until the water runs out, then you have to dip the thermometer to refill the tube to read the temp again.c) the blue bulb came un-glued from the number backing, so now the thermometer is useless. Now I have to get a replacement.