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The heater should be turned on by a regulating thermostat that keeps water temperature at the desired temperature for your species of fish, usually 72 - 80° F. Many heaters used by aquarium hobbyists contain one or more thermostats that can regulate temperature at a setting.

A thermometer can be left on all the time if you are refering to a digital version because it only measures the temperature and does not affect water.

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14y ago

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Is it important to have thermometers in a fish tank?

Yes it is important to have a thermometer in your fish tank. The temperature of the water should be between 75-80 degrees.


What do you do if the thermometer breaks in your fish tank?

Take the fish out, put it in a tempory tank. Go to the shops, buy a new one then come back and fit it. Answer 1 is not incorrect, but failed to mention that the tank in which the thermometer broke, and from which the fish were removed, should have the contaminated water discarded, and the tank and all accessories which were exposed to the thermometer contents, thoroughly cleaned and decontaminated BEFORE RETURNING the fish to that tank. j3h


How much is a fish tank thermometer?

50


Can you put a thermometer in a fish tank after the waters in there?

yes u can


Why should you place a thermometer in your fish tank?

Placing a thermometer in your fish tank is important to monitor the water temperature. It helps ensure that the water is within the optimal range for your fish species, as fluctuations in temperature can stress or even harm the fish. Regularly checking the temperature can also help you detect any issues with your tank's heating or cooling system.


Does a thermometer go inside or outside fish tank?

Inside the tank as it is for you to see the water temperature.


Which tool tells you how warm the water is inside the fish tank?

A thermometer. You can get them for a grrrreat price at www.bigalsonline.com


With what can you know your fish tank temperature?

The instrument that is needed to measure the temperature of the water is called an "Aquarium Thermometer".


What if their is a black out and you have a fish tank?

if there is a black out and you do have a fish tank you should be fine an less you have a chinease fish or any fish that is in the red mark for fish


What are some essential fish tank accessories that I should consider purchasing for my aquarium?

Some essential fish tank accessories to consider purchasing for your aquarium include a filter to keep the water clean, a heater to maintain the right temperature for your fish, a thermometer to monitor the water temperature, a light to provide illumination for your fish and plants, and decorations or plants to create a natural environment for your fish.


Bubbles in my fish tank?

You are supposed to have bubbles in your fish tank or else your fish will die because they don't have enough oxygen.


What are supplies needed for 5 gallon fish tank?

For a 5-gallon fish tank, you will need a filter, heater (if keeping tropical fish), thermometer, water conditioner, substrate, decorations, fish food, and a water testing kit to monitor water quality. It is important to properly cycle the tank before adding fish to establish a healthy environment for them.