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INSTEN Black 100W 200W 300W 110-120V Adjustable Aquarium Fish Tank Water Heater

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ITEM# 16302531
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    ITEM#: 16302531

    This is a BasAcc aquarium fish tank water heater. Provide a constant warm environment for your tropical fish to stay healthy with this aquarium water heater.

    Make your fish happy with this adjustable aquarium fish-tank water heater. The fully submersible heater includes a temperature gauge for convenient monitoring, and it maintains water temperatures between 20 and 34 degrees Celsius. The polarized plug of this double-sealed 110/120 V aquatic appliance ensures your fish's safety from shock, even in case of a leak.

    • Quantity: 1
    • Range of temperature adjustment: 20-34°C
    • Voltage: 110V-120V
    • Keeps the water temperature inside the tank steady
    • Easy-to-read temperature indicator
    • Sensitive and reliable thermostat maintains uniform temperature
    • Two suction cups and user manual included
    • Advanced design for freshwater or marine setups
    • Double sealed waterproof material ensures safe operation
    • Totally submersible when using
    • Polarized plug prevents electrical shock
      Available Options:
    • 100W (Heater length: 9.4-inch, Cable length: 40.2-inch)
    • 200W (Heater length: 11.4-inch, Cable length: 40.6-inch)
    • 300W (Heater length: 11.4-inch, Cable length: 40.9-inch)

      All rights reserved. All trade names are registered trademarks of respective manufacturers listed.
      California Proposition 65 Warning: This product may contain one or more chemicals known to the State of California to cause cancer, birth defects, and/or other reproductive harm.


    Material Plastic
    Pet Fish
    Dimensions n/a
    Model Number 1866217
    Country of Origin China

    Product Reviews

    5 Stars
    4 Stars
    3 Stars
    2 Stars
    1 Stars
    • Most Recent

    • awesome

      came before expected, & works really well.

      Read More
    • Workable heater

      This heated is rather short in size (for the watts), but keeps my tanks tempature right where I need it, 84degrees. Now I use three to keep I there on 180 gallon tank. These are great heaters for the price. Would buy more if they where in stock.

      Read More
    • Works Good

      Got the 300w and seems to work well and maintains a constant temp on my aquarium.

      Read More
    • functions as expected.

      Tank is at desired water temperature.

      Read More
    • Great price I thought

      I ordered three of these and I have tanks in my garage. I used two immediately. Holding temps just fine works as expected. Only knock was shipping they sent it in a soft bag no bubble wrap so lucky they didn't break. You'd think they would do a better job packing breakables.

      Read More

    Questions & Answers

    • I have a 20 gallon tank, and ordered the 300w. Is that too much???

      • The suggested water volume for the 300W heating is 99 gallons. The suggested water volume for the 100W heater is 32 gallons.

    • What size do you recommend for a 35 gallon hexagon tank?

    • Why did you choose this product?

      • value for the price

      • bought one from here few weeks ago and works great. needed another for my bigger tank

      • because is was cheap

      • Needed a new heater

      • We have ordered them before and they work well and are affordable.

      Read more Read less
    • I have a 5 gallon Marineland Hex tank with a Betta in it that I need a heater in. Will this be ok or will it be too big? Non adjustable heaters keep the water too cold.

      • Hello Anlafleu, i would not recommend using these heaters as they will make the tank way to hot, i would recommend using a 50 watt heater. Thanks for shopping with us!

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    Shipping & Returns


    Usually leaves our warehouse in 1-2 business days. *

    Standard Return Policy:

    Items must be returned in new or unused condition and contain all original materials included with the shipment. More Details

    FINAL SALE EXCLUSION: Items marked as FINAL SALE are not returnable unless the problem you experience is the result of our error.

    Shipping Information:

    Our standard shipping method is ground shipping. We also offer expedited shipping for most items. Your final shipping cost and estimated delivery timeframe will be available at checkout.
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    ** Most Oversize orders are delivered within 1-4 weeks. Some orders may take 6 weeks to be delivered.