1. Home > 
  2. Aquarium & Fish Supplies > 
  3. Aquarium Heaters & Thermometers > 
  4. Aqueon Submersible Aquarium Heaters > 
  5. Aqueon Submersible Aquarium Heaters (300 Watt)


Aqueon Submersible Aquarium Heaters (300 Watt)

Item: 6104
Compare to: $41.99
You Save: $12.00!(29%)


Keep your fish happy and healthy with the ideal water temperature with the adjustable and accurate Aqueon Submersible Aquarium Heater. Whether your tropical community fish tank is freshwater or saltwater, you can quickly and easily make sure that the aquatic climate is the right one for your finned friends, thanks to the convenient and precise temperature dial of this submersible heater, and you can rest easy knowing that the shatter-proof construction will keep your fish safe and sound. With a wide range of available wattages, finding the right heater for your aquarium is a snap, and it comes with six feet of power cord to make setup easier, as well as an automatic safety shut-off feature to help keep your fish swimming safely along.

  • Perfect for easily maintaining the ideal water temperature for both healthy salt and freshwater community fish tanks.
  • Available in a wide range of the most common wattage sizes to provide a custom heating experience for any aquarium.
  • Precise temperature dial from 68 to 88 °F allows for complete control of aquatic climate within a 1-degree difference.
  • Durable shatter-resistant heater construction allows for completely submersible and safe aquarium temperature control.
  • Convenient and secure design offers a 6-foot power cord, automatic safety shut-off feature, and overheating protection.
  • Useful Information

    Watts Overall Length Aquarium Size
    50 9 inches 5-20 gal
    100 10.3 inches 15-40 gal
    150 13 inches 30-55 gal
    200 13 inches 50-75 gal
    300 15 inches 65-90 gal

    WARNING: To guard against injury, basic safety precautions should be observed including the following:

    DANGER- To avoid possible electric shock, special care should be taken since water is employed in the use of aquarium equipment. For each of the following situations, do not attempt to repair yourself; return the appliance to an authorized service facility for service or discard the appliance.
      A. if the appliance shows any sign of abnormal water leakage, immediately unplug it from the power source.

      B. Carefully examine the appliance after installation. It should not be plugged in if there is water on the parts not intended to be wet.

      C. Do not operate any appliance if it has a damaged cord or plug, or if it is malfunctioning or if it is dropped or damaged in any manner.

      D. To avoid the possibility of the appliance plug ore receptacle getting wet, position aquarium stand and tank to one side of the wall mounted receptacle to prevent water from dripping onto the receptacle or plug. As shown in the figure below, a "drip loop" should be arranged by the user for each cord connecting an aquarium appliance to the receptacle. The "drip loop" is the part of the cord below the level of the receptacle, or the connector if an extension cord is used, to prevent water travel along the cord and coming in contact with the receptacle. If the plug or the receptacles do get wet, DON't unplug the cord. Disconnect the fuse to teh circuit breaker that supplies power to the appliance. Then unplug and examine for the presence of water in the receptacle.
    1. Close supervision is necessary when any appliance is used by or near children.
    2. To avoid injury, do not contact moving parts or hot parts such as heates, reflectors, lamp bulbs, etc.
    3. Always unplug an appliance from the outlet when not in use, before putting on or taking offparts, and before cleaning. Never yank the cord to pull plug from the outlet. Grasp the plug and pull to disconnect.
    4. Do not use an appliance for other than intended use. the use of attachments not recommended or sold by the appliance manufacturer may cause an unsafe condition.
    5. Do not install or store the appliance where it will be exposed to the weather or to temperatures below freezing.
    6. Make sure an appliance mounted on a tank is securely installed before operating it.
    7. Read and observe all the important notices on the appliance.
    8. If an extension cord is necessary, a cord with a proper rating should be used. A cord rated for less amperesor watts than the appliance rating may overheat. Care should be taken to arrange the cord so that it will not be tripped over or pulled.
    9. If this appliance has a polarized plug (one blade is wider than the other) as a safety feature, this plug will fit in a polarized outlet only one way. If the plug does not fit fully in the outlet, reverse the plug, reverse the plug. If it still does not fit, contact a qualified electrician. Never use with an extension cord unless plug can be fully inserted. Do not attempt to defeat this safety feature.

    Customer Reviews

    1 Reviews
    100% (1)
    0% (0)
    0% (0)
    0% (0)
    0% (0)
    100% Recommend this product (1 of 1 responses)
    By uni
    May 9, 2016
    Steady Temp Keeper
    It is keeping a nice steady temperature in my fifty-five gallon tank. My fish are grateful for a heater that works well, especially the ecstatic Mollies who demand their water-bed warm. The Bushies immediately laid lots of eggs and the babes are surviving better than ever before due to steady temperature. I've had a smaller heater in my twenty gallon baby-tank for a long time, and I MUST sell babies soon for there are so many. Of course my tank filters function well with steady temperatures also.

    Questions and Answers

    There are no questions or answers for this item.

    CALL IN YOUR ORDER 800.889.8967

    Stay in touch. Friends fur-ever!

    Terms and Conditions

    You have to agree on terms in order to proceed to the subscription.