Koller Products AC Power Adapter for Aquariums, 4.5-volt

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For use with all KollerCraft aquariums with battery-powered LED lights, the Koller Products AC Power Adapter for Aquariums enables you to keep the lights on while saving batteries. Tested and designed to meet the power needs of low-voltage LED lights, this adapter converts AC electrical power into the DC power required by your aquarium’s LED lighting with a convenient 70" power cord.

Key Benefits
  • Low-voltage transformer to be used with aquarium kits featuring battery-powered LED lights.
  • Adapter operates the aquarium's LED lights from electrical power outlet saving you money on batteries.
  • Perfect for those tired of changing batteries every few days.
  • For use with KollerCraft aquariums with battery-powered LED lights.
  • Convenient 70" power cord length and a 4.5 volt power adapter.

See all items by Koller Products

  • Item Number
  • Dimensions
    6 x 4.75 x 3 inches
  • Aquarium Type
    Freshwater, Saltwater
  • Fish Type
    Tropical Freshwater, Marine Fish
  • Material

Fish Care Made Easier

API is a name you can trust when it comes to taking care of fish. Not only are they passionate about fishkeeping, but they're dedicated to improving the hobby and making it easier to maintain the ideal aquatic environment. From helping the novice set up a new tank to providing state-of-the-art filters for advanced systems, you can rely on API's dedication to quality.

Fish Care Made Easier
Maintain the Perfect Setup

Maintain the Perfect Setup

Fishkeeping is a much easier task with API, because they've taken all the guesswork out of setting up a tank and maintaining it. Their proven treatments include water conditioners and clarifiers, fish medications, pH adjusters, algaecides and quick-start solutions—all designed to keep your aquarium crystal clear and your fish happy and healthy.

Testing Is Key

Once you've started a new aquarium, the only way to keep it in perfect balance is with routine water testing. API gives you all the tools you need to create a nurturing environment for both fish and live plants. Their comprehensive Master Test Kits are tailored to freshwater, saltwater or reef environments, and individual tests for things like pH, ammonia or nitrites leave nothing up to chance.

Testing Is Key
Clearing the Water

Clearing the Water

API offers reliable three-step filtration for tanks of all sizes with their FILSTAR XP Canister filters and wide variety of filter media. These powerful filters constantly circulate the water, trapping organic waste and odors, removing harmful ammonia and contaminants, and helping good bacteria to thrive in the tank.

Superior Nutrition

Feeding your aquarium inhabitants, whether they're tropical fish, turtles or newts, is something that can be tricky without the right food. API developed a special diet for every type of fish—one that's highly palatable, which leads to less waste in the tank. And that means less ammonia to cloud the water. For your turtle friends, premium floating pellets and stick treats provide multiple vitamins for a stronger, healthier shell.

Superior Nutrition
About API

About API

Through extensive and continuous research and development, API created quality products for all levels of fishkeeping. As people who are passionate about fish care, they understand the rewards of keeping up a successful aquarium or aquarium. With easy-to-read guides and premium treatments, foods, filters and testing equipment, API helps aquarists establish and maintain an environment where fish can flourish.

Shop API

Rating: 4.5 of 5 stars 7 Reviews 7 Reviews 4.6 out of 5 Stars

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100% Recommend

100% of reviewersrecommend this product

Rating: 4.5 of 5 stars 4.6 / 5

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7 Reviews

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  • 5 out of 5 stars

    Excellent Product

    By PetManiac on Feb 5, 2021

    I have been using one of these on the first Koller aquarium I purchased at least three years ago. Initially I used the battery option but it was eating me out of house and home as they constantly had to be replaced. This power adapter is simply perfect and appears to have a long life. I will be setting up my second aquarium using the one I just purchased.

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  • 3 out of 5 stars

    It works just fine.

    By Azdrydock on May 8, 2018

    I just needed 4.5 volts DC it had nothing to do with an aquarium. The Transformer actually puts out 7 volts DC but it turned out fine for my application.

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  • 4 out of 5 stars

    Good product

    By Guppies on Mar 25, 2018

    Good product. Fast shipping and services. Works great.

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  • 5 out of 5 stars

    Power adapter

    By Deedee on Sep 16, 2017

    This is fantastic. Just what I needed. No more battery changes every 2 days. Love it. Super fast shipping

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  • 5 out of 5 stars

    Sure does beat using batteries

    By 1happydogowner on May 25, 2017

    I do not know why this manufacture did not include this power cord to run the light on this fish tank but if you buy this tank you will want this. I bought rechargeable batteries but even that was a pain bc I had to change the batteries every day!

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  • 5 out of 5 stars

    Exactly what we needed

    By LadyTonka on Feb 24, 2017

    The product is perfect. The packaging was flawlessly intact, fresh off the shelf. It plugged right in and has worked perfectly every day.

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  • 5 out of 5 stars

    Power Adapter

    By Michel on Dec 15, 2016

    exactly what I needed light works better with the ac adapter and colors are more sharp

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