What temperature should freshwater fish be at?

Even so, most species kept in home aquariums are either native to the tropics or temperate regions of the world. Tropical fish make the majority of them though. Aganist this background, the best temperature range for an average freshwater fish tank is anywhere from 72°F to 80°F.

What is the ideal temperature for most fresh water fish?

A good range is 76° to 80°F (25° to 27°C). A few species need to be kept several degrees warmer, and some species require temperatures a few degrees cooler. A thermometer is vital. A stick-on type enables you to check the temperature whenever you look at the aquarium.

Is my fish tank too warm?

Safe Temperature Range

As long as the water temperature does not remain above 86 degrees Fahrenheit and 30 degrees Celsius for weeks on end, you need not be concerned. However, as the temperature rises, the dissolved oxygen in the water decreases. If you have a good filtration system, odds are you won’t have a problem.

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Is 72 degrees to cold for tropical fish?

Generally speaking, when it comes to temperature preference, fish will fall into one of three categories: Cold-water fish: Below 68°F (20°C) Tropical fish: 75-80°F (24-27°C) Temperate fish: A wider range of temperatures, often overlapping the above categories.

What is the ideal temperature for molly fish?

Mollies are a tropical fish that needs temperatures in the range of 75°-80°F (24°-26.7°C). A heater is an absolute necessity that will keep the water warm and hold it at a steady temperature.

What temperature should cold water fish tank be?

For example, koi, goldfish, and pond loaches are commonly considered to be cold-water fish because of their ability to survive at very low temperatures, but their temperature preferences and/or physiological optimal temperatures are 32 °C (90 °F), 24-31 °C (75-88 °F), and 26-28 °C (79-82 °F), respectively.

Can I put ice cubes in fish tank?

Float a bag of ice or cold water in the fish tank to gently lower the water temperature. … Avoid putting ice cubes directly into your aquarium unless you make them with reverse osmosis or dechlorinated water.

How do you check a fish tank temperature without a thermometer?

If you leave your elbow in the water or 5–10 seconds, you’ll be able to form a rough idea of the water’s temperature. If the water feels slightly warm, but not hot, it’s around 100 °F (38 °C).

Is 27 degrees OK for tropical fish?

The best temperature for your fish depends on the species, but in general, tropical fish are most healthy in the range of 75-80°F (24-27°C).

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How do I know if my fish water is too cold?

If the water temperature is too low, it will have reduced metabolic function, making it too cold to move around very much. It may float at the bottom of the tank, or float on one side.

Is 82 degrees too hot for aquarium?

When the water is too cold for a fish, its metabolism slows down and it becomes more sluggish and sleepy. When the water is too hot, they become hyperactive and use up more oxygen. … For example, if a fish likes temperatures between 72 and 82 degrees Fahrenheit (27.78 °C), try not to keep them in 82-degree water.

Is 77 degrees good for tropical fish?

Freshwater tropical aquariums should be kept at approximately 77 degrees F for optimal fish health. Although tropical fish can survive in water ranging from 72 degrees F to 82 degrees F, it is best to hover around the 77 degree mark.

What fish can live without a heater?

10 Best Coldwater Fish That Don’t Need a Heater

  1. Sunset Variatus Platy. …
  2. Celestial Pearl Danio. …
  3. Rainbow Shiner. …
  4. Hillstream Loach. …
  5. Endler’s Livebearer. …
  6. Clown Killifish. …
  7. Cherry Shrimp. …
  8. Dojo Loach.

What temperature do tetras like?

For most tetras, pH should be between 6.8 and 7.8, alkalinity between 3° and 8° dkH (50 ppm to 140 ppm) and temperature between 75° and 80° F. If the aquarium is kept in rooms below 75°, use an Aqueon Aquarium Heater to maintain the correct temperature. Exceptions like the Buenos Aires tetra do better in cooler water.

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