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Aquarium Heaters
This page contains information about aquarium heaters and thermometers.

1. Aquarium Heaters
If you decide to have a Cool Water Aquarium, you won't need an Aquarium Heater or a Thermometer.
Click here read more about Cool Water Aquariums.

But if you choose to have a Warm Water Aquarium, you'll need both an Aquarium Heater and a Thermometer.
Click here to read more about Warm Water Aquariums.

Heaters come in different sizes that are measured in watts. Multiply the number of gallons in your aquarium by 5 to determine the size heater to get for your aquarium.

For example, a ten gallon aquarium needs a 10 x 5 = 50 watt heater. Similarly a 20-gallon aquarium needs a 20 x 5 = 100 watt heater.

Click here for help on calculating the size of your aquarium.

Carefully read the directions that come in the box with your aquarium heater, where you'll read about how to adjust the heater, so your aquarium water is in the correct temperature range.
Click here for more information about adjusting your heater to the correct temperature range.

Don't remove a hot aquarium heater from an aquarium. It may overheat and crack, or crack when it goes back into the water.

Unplug the heater 15 minutes before removing it from the aquarium and be sure to plug it back in, after it's back in the aquarium.

Pet Fish Talk a Podcast about keeping pet fish in aquariums, fish bowls, and ponds.  
Click here to listen to a Special Pet Fish Interview hosted by The Bailey Brothers about the proper equipment for a Saltwater Aquarium, including an aquarium heater.
2. Aquarium Thermometers ...
show the temperature of the water in the aquarium.

The directions that come with an aquarium heater usually recommend putting the thermometer far away from the heater.

For example, put the heater in the back-left corner of the aquarium, and put the thermometer in the front-right corner.

Buy the stainless steel type of thermometer shown below. If not damaged, this type will last many years.

Thermometers that attach to the inside of the aquarium often come loose and float around inside the aquarium, where they are difficult to find and to read quickly.

Thermometers that stick on the outside of the aquarium glass will soon fade, become difficult to read, and so are not recommended.

Aquarium Thermometers usually have a green range printed on them that indicates the recommended temperature range for warm water fish.

Click here to go to another web page in this website with Customer Comments and our Replies about Aquarium Heaters.
Links to more information about Aquarium Equipment on other pages in this website.
   ●  Aquariums, Covers, and Stands
   ●  Aquarium Filters and BIO-Wheels
   ●  Aquarium Gravel and Cultured Gravel
   ●  Gravel Washers and Cleaning Gravel
   ●  Aquarium Decorations and Ornaments
   ●  Aquarium Air Pumps and Accessories
   ●  Aquarium Lights and Lighting Fixtures
   ●  Where to Buy Aquarium Supplies
Most of the Aquarium Supplies listed on the pages in this website can be purchased from our advertisers.

Please click on their links and investigate the products that they offer for sale on their websites.

Click here to see the list of the Bailey Brothers' favorite aquarium equipment.

A Comment to Advertisers
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If you are a potential advertiser, click here to contact us and learn about putting your advertisement on a page that is similar to this page.

We offer powerful opportunities to advertise your products and services on this popular web site.

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Aquarium Decorations and Ornaments. Click on this image for more information.
Koi - Click on this image for more information about Koi.
Pet Fish Talk is an Internet-Radio Talk Show about Keeping Pet Fish in Aquariums, Fish Bowls and Ponds, that is hosted by the Bailey Brothers, DrTom and Nevin, from 1:00 to 3:00 pm, PT, each Wednesday. Click on this image for more information about Pet Fish Talk.
BIO-Wheel Aquarium Filters. Click on this image for more information.
Click on this image to see a list of over 100 short videos of Tropical Fish.
Champion Koi Show. Expert information about Koi Fish and Ponds.