Advice by Jan, keeping fish since 1995. you read and agreed to the. I have one held on by a magnet. If you have an adjustable heater, check to make sure the indicator light is working. These thermometers are designed to be left in your aquarium, allowing you to check the temperature of your tank by peering inside – a great hands-free way to monitor the temperature of your aquarium. Does the size/volume of the tank affect the growth of the fish? Is it dependent on external factors such as ambient room temperature, etc.? Frequently Asked Questions Fish Care Sheets Freshwater Aquarium Fish Forum. Sometimes heaters can be off by a few degrees, so it may not be keeping the tank at the exact temperature that you have it set to. Below are some helpful and important tips for keeping your fish safe and happy over winter! These thermometers will have a suction cup to hold the thermometer … If I set the heater in my tank at 28 deg Celsius the thermometer on my tank... How many fish can i keep in a 20 Litre Tank? FISH STAYING IN TOP CORNER OF TANK NEXT TO HEATER! Replace the heater if any signs of damage or wear are detected. Bettas, discus and certain other species do best in water that is between 76° and 85° F, most other tropical fish prefer a range of 75° and 80° F, and goldfish do best from 68° to 74° F. Water temperature should also remain constant to keep your fish’s immunity up. So I have a Tetra 2-15 gallon submersible heater and I have a thermometer o... Pleco spinning tight circles. When your making adjustments to your heater, allow several hours before checking the results. If your aquarium thermometer is damaged or is a few years old, it might be time to replace it. Stick On Thermometer. Thermometer measures over a range from 65–85 °F with an accuracy of ± 1 ºF. After returning your heater to the aquarium, wait at least 30 minutes before plugging it back in. Submersible aquarium heaters can be installed horizontally near the bottom of the tank for best results. They aren’t bad... DealMUX Round Sticker Thermometer. This helps discourage diseases such as ich, which has a high mortality rate if not caught and treated early. Is that as good? if it is the suction cuped ones, you should be able to twist the actual thermometer, and then you can make it face outwards. Basic Types of Aquarium Thermometers. Once satisfied the element is working, reset the dial to the desired temperature. Stunting - Do fish like Goldfish grow only to the size of their tank? Use a larger size or a second heater if your aquarium is in an especially cold room or is located on an exterior wall or near an outside door. MERCURY THERMOMETER BROKEN IN TANK!!! We have a number of additional educational resources created just for you -- take a look now! This includes flat heaters and those with plastic coated tubes. Nitrites High. A thermometer close to the heater might read higher than the actual temperature. You have to keep the aquarium clean, ensure it has the proper salinity, be sure your fish have enough food (though not too much), maintain the right PH levels, and keep it at the right temperature. Never level the aquarium by placing shims under the tank, which can put undue stress on the glass. 5¼" x ¾". I prefer to let them float and they tend to get stuck in front of the filter output, which is ok with me. I have also found that there is about 2 degress celsius difference between what the heater says it is set at and what the thermometer reports, i.e. Submersible aquarium thermometer. Although the tank may look fine, changing or unsuitable water temperature can have a negative effect on both fish and plants. 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