Ashoka Tropical & Marine Fish Aquarium Shop in Delhi-NCR

Maintain Tank Temperature With A Fish Tank Chiller

As the name suggests, fish tank chillers are designed to keep the water in your fish tank cool in warmer climates. They are mainly used in marine aquariums where fish tend to be highly sensitive to temperature although fancy goldfish in tropical climes also benefit from the use of a fish tank chiller. An additional benefit is that cooler water has a greater capacity to hold dissolved oxygen thus avoiding issues with low levels of oxygen in your aquarium.

When do you need the fish tank chiller?

A fish tank chiller will be required when you run an aquarium with fish that prefer to live in cold water only. Aquarium chillers will maintain the water temperature you desire. Changing the temperature is something you need to do yourself, manually.

An alternative to a chiller is to run an air conditioning unit in the room that contains the aquarium, however running the air conditioner just to keep the fish tank water at the desired temperature can be a very expensive option. And even though a fish tank chiller may seem like an expensive item it will soon pay for itself if you are not running the air conditioner day – especially if you are not home during the day or you are on vacation.

Another chiller alternative is to add ice to the tank but this is highly impractical unless it is a very short term method to deal with heat wave conditions. If you do need to add ice to your tank it can be added by freezing water in a bottle. The frozen water bottle can be lowered into the tank or hung on the side of the tank.

For very warm climates and for fish that naturally require cold water there is no real alternative other than a chiller unit. It is also possible to purchase an aquarium heater and chiller in one unit which can be used year round to maintain the water temperature in both summer and winter.

When choosing your chiller you will have a choice of thermoelectric, in-line or drop-in fish tank chiller.

Thermoelectric chillers are commonly used in small tanks of less than 60 gallon capacity. They are energy efficient and silent running and can be used in both salt and freshwater aquariums.

Drop-in chillers are commonly used in saltwater aquariums or reef set ups. They require no additional plumbing and are fitted in line with the tank filter. They are simple to install and have low maintenance requirements.

In-line aquarium chillers are manufactured for tanks with a capacity of 60 gallons or more. They have a motor, a compressor and cooling fans and will require a well-ventilated area for installation. They may require professional installation and they are quite large.

An aquarium thermometer is an inexpensive necessity to use in conjunction with your tank chiller. If your chiller fails or mismanages the temperature of your aquarium you need to know immediately. A thermometer is a reliable way of monitory the temperature.

The main disadvantages of fish tank chillers are the cost of the units themselves – which can vary from a few hundred up to several thousand dollars – and the energy that they consume, which can be 80–100 watts per hour.

About the author: Alison Stevens is an online author and maintains The Goldfish Site and The Goldfish Blog to assist anyone who wants to get started with setting up an aquarium fish tank and keeping freshwater fish.


Frequently Asked Questions

    What is the ideal water temperature for tropical fish tanks?
    What is the ideal water temperature for tropical fish tanks ? For how long should the tank light be left on per day?

    • ANSWER:
      The water temperature depends upon the fish you have in your aquarium. For "typical" freshwater fish, the temp in my aquariums is between 70 and 78 F. There are others that require higher or lower temps, for instance blind cave fish can take 63-75 F, and Bettas as high as 70-85 F.

      Saltwater aquarium fish typically come from the tropics, so 75-80 F is best.

      As for lighting, I keep my lights on about 8-12 hours per day. When I wake up, they come on, when I finish feeding them at night, the lights are turned off. Fish require some light, but so does algae. The more light you give, the more algae growth you'll have, so there's a bit of a balance with lighting.

    What is an ideal temperature for a tropical fish tank?
    Been told so many different temperatures, whats the average temperature for a tropical fish tank?????? should it be room temperature or slightly higher or lower???
    are these temperatures in farenheit or celsius??????? one answer states degrees c, but others dont!
    ignore that comment, just realised that 75 celsius is more likely to fry the fish than keep them healthy! sorry, blonde moment!

    • ANSWER:
      Yep, 75C will give you fish fingers.

      But 79-83F will keep them healthy and prevent the dreaded Ich.

      Good luck!

    Keeping tropical fish at room temperature?
    I live in Florida and I have had several fish tanks in my life but I have never used a heater even for tropical fish. I have kept angels, tetras, parrot cichlids, oscars, goldfish, plecos, corys, and bettas at the same temperatures. (different tanks of course)

    I have had almost all my fish thrive and I was just wondering if tropical fish like neons and stuff can be kept at room temperature (i guess around 73 degrees, probably colder) because they all seem to thrive for me?

    • ANSWER:
      Eh... Some species will do fine in lower temperatures. But if the species needs a warmer environment, and you put it in that, well then over time the health of the fish will deteriorate.

      Honestly though, if your temperature is going to fluctuate even a little, a heater is required. And Id still stand my ground with more tropical species needing heaters in the first place.

      Most tropical species do best around 78-82F.

    What is the best temperature for my tropical fish tank?
    I have a 20 gallon with no live plants. My fish include 1 blue gourami, 1 elect. blue chiclid, 4 tiger barbs, and 1 bala shark. I plan to get a loach or maybe 2. What should my tank temp be, incorporating all of these fish?

    • ANSWER:
      You should keep it about 26 degrees Celsius or 78-79 Fahrenheit.

    Tropical Fish tank, temperature problem?
    I have my heater set to come on when the water drops to 27 degrees. My thermometer is currently showing the water temperature to be 29 pushing 30 degrees, however my heater is still coming on every half an hour. Is my new heater broke?

    • ANSWER:
      your heater could be under powered for the size of the tank and room temp, I would go were you got it and ask them. You might need a bigger one, or you might need a replacement.

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