what temperature should my betta fish water be at? | Yahoo Answers

Purchase a heater with a thermostat––Betta fish like water temperatures between 78-82ºF/24-27ºC
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Cold temperatures and dirty water can cause stress for your Betta and make him more likely to get sick and die before his time. But this doesn't mean you can't keep your Betta in an unfiltered, unheated tank. It just means you need to fully understand the requirements of your Betta fish before deciding if that is the correct decision. It also means you need to be ready to do the extra work required to keep an unheated, unfiltered setup in top condition for your fish.
Since bettas are tropical fish, they require water at a temperature of at least 76 F, and in a range between 76F -82F.
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The betta fish also known as the Japanese fighter loves warmer water since it is in fact a tropical fish. A recommended temperature of 80 degrees Fahrenheit. A small bowl should be kept at room temperature at bare minimum. This is going to be the coldest these fish get away with. i just got a betta fish and im not quite sure what temp or if the water even needs to be a certain temperature?
Photo provided by FlickrHere are a few important points to remember when keeping water temperature consistent for your betta fish.
Photo provided by FlickrWhat water temperature range is best for betta fish? - Quora
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BETTA HEATER
Being Tropical Fish, Bettas need to be kept at a temperature of 78 degrees F (25 degrees C) at a MINIMUM on a consistent basis. It would be much better to aim for 80 degrees F (26 degrees C) to make them even happier. This is very important as the Betta seems to be especially prone to some of the cold water conditions such as Ich and Finrot. These diseases are primarily prevented by keeping the tank temperature at steady and proper levels. and water parameters good.The temperature of the water your betta fish is in is very important because they come from a warm and tropical climate, mainly Thailand and Burma. This means that they are used to being in warm waters, preferably between 78 and 80 degrees Fahrenheit. These fish come from cplaces where the climate is very steady and temperatures do not fluctuate all that much, especially water temperatures, so this means that betta fish have gotten very accustomed to a specific temperature range. Once you set up your fish tank and place the on the bottom along with most of your decorations, it’s time to add water. The water must be a certain temperature, pH value, dH level, etc. to ensure that your Betta is in the environment that will help him thrive.The ideal temperature for your betta tank is very strict and it is between 78 and 80 degrees Fahrenheit, or 25.5 and 26.5 Celsius. Now keep in mind, this is the ideal water temperature in which betta fish will thrive and do the best they can. Betta fish can survive in waters between 72 and 86 degrees Fahrenheit, or 22.2 to 30 degrees Celsius, but they will only be surviving instead of thriving. It the water in a betta tank is any hotter or colder than the survivable range, then your betta fish will start to display some weird symptoms and even die. Keeping a betta fish in waters that are not of an ideal temperature can result in erratic swimming, floating on one side, reduced metabolic function, and a critically weakened immune system. The absolute maximum temperature that your betta tank can be at is 30 degrees Celsius or 86 degrees Fahrenheit. Any higher than that and you are more or less cooking your fish, cooking it slowly, but cooking it none the less. You will notice weird behavior in your betta fish if the water is too warm. First of all, they will begin to be erratic in their swimming as well as overactive, or in other words they will swim far more, faster, and in different patterns than in water of ideal temperature.