Water temperature is crucial for the health of your fish, so having a reliable thermometer is a must. The Marina LCD thermometer offers both horizontal and vertical mounting options. It uses liquid - crystal technology to give you accurate and easy - to - read temperature readings in both Fahrenheit and Centigrade. This thermometer is perfect for all types of aquariums, whether they're filled with fresh or saltwater. It comes with an adhesive backing, which makes it a breeze to attach to the outside glass of your aquarium. Available in two great models: one is 8 cm (3.125 in) long and measures temperatures from 20 to 30°C (68 to 86°F), and the other is 7.6 cm (3 in) long and can measure from 19 to 31°C (66 to 88°F).

Using your Marina LCD Aquarium Thermometer is simple. First, decide whether you want to mount it horizontally or vertically on the outside glass of your aquarium. Clean the area where you'll place the thermometer to ensure a good adhesion. Then, peel off the backing of the adhesive and stick the thermometer firmly in place. Make sure it's level for the best reading. As for care, keep the thermometer clean by gently wiping it with a soft, damp cloth. Avoid using harsh chemicals as they can damage the LCD display. Check the temperature regularly to ensure a stable and healthy environment for your fish. If the thermometer seems to be giving inaccurate readings, double - check its placement and make sure it's not in direct sunlight or near a heat source.