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"Green Killing Machine 3W" UV Sterilizer Full Bulb and Housing Replacement Kit (for "Green Killing Machine 3W" Drop-In UV Sterilizer)
"Green Killing Machine 3W" UV Sterilizer Full Bulb and Housing Replacement Kit (for "Green Killing Machine 3W" Drop-In UV Sterilizer)
"Green Killing Machine 3W" UV Sterilizer Full Bulb and Housing Replacement Kit (for "Green Killing Machine 3W" Drop-In UV Sterilizer)
"Green Killing Machine 3W" UV Sterilizer Full Bulb and Housing Replacement Kit (for "Green Killing Machine 3W" Drop-In UV Sterilizer)

"Green Killing Machine 3W" UV Sterilizer Full Bulb and Housing Replacement Kit (for "Green Killing Machine 3W" Drop-In UV Sterilizer)

Brand: AA
Item Number: AAAS-GKM3W-RPLC

Regular price $29.99 On Sale

Only 0 left in stock!

Shipping Policy: Little or No Shipping Charges for Regular-Sized Items; We Cover Part of the Freight Costs for Large Items Shipped Nationally. See Shipping Policy.

Dimensions: 2.15"L x 2.15"W x 8.75"H

Tank Rating: up to 50 Gallons

Main Function: Eliminate excessive bacteria from clouding the aquarium water into a green smog, and kill pathogens and pests from infecting our livestock


  • Bulb Replacements include Full Housing Replacement, ensuring never having to touch or handle UV bulb to protect user, plastic guard remains strong against UV's upon replacement, and simple pull-off disassembly turns bulb changes into a few second project
    • Each Bulb Housing is rated for a max of 9000 hours of continuous use
    • Two Tides has seen the bulbs last around 6-9 months, and we strongly recommend them to be changed every 6 months to maintain optimum and safe operation
  • Drop-In Submersible Installation creates a Plug-n-Place 5-10 minute full installation process
  • Patented Direct UV to Water Contact Housing is the only sterilizer design that passes water directly past the UV bulb
    • Peak efficiency means that the bulb does not need to be on as much to do its job, increasing both energy savings and bulb longevity
    • Drastically cuts down on sterilization period to clear water multiple times faster (generally 4-7 days from completely green to crystal clear)

  • Circular Internal Water Flow Pattern creates longest possible contact time between bacteria and UV's
  • Included Pump and Pipe Plumbing mean no tools, no external pipes, and no plumbing installation
    • Pump rated for optimal use and bacteria-killing time
  • LED Indicator Module visually alerts when UV bulb needs to be replaced, further lessens contact time between the user and the UV bulb, and eliminates the need to look at the bulb chamber to see if it is functioning properly (can cause eye damage if not careful)
  • UL Safety Certified (learn more about UL Safety)
  • #1 Best Selling UV Aquarium System in the U.S. with over 1/2 million units tested and sold

Here is a video from AA Aquarium showcasing the "Green Killing Machine" UV Sterilizer, with topics covered including Sterilizer Function, Usage Guidelines, and Housing Change Overview

This video demonstrates how simple it is for regular maintenance of the Green Killing Machine by Cleaning the Pump Section

Finally, Jeff from Premium Aquatics gives us a through rundown of the Green Killing Machine Unboxing

Here is a Quick Startup Guide for the Green Killing Machine 9W and 24W, with topics including Quick Installation, Safety Instructions, Maintenance Guidelines, and Troubleshooting

"Green Killing Machine" 9W + 24W Quick Startup Guide

Have any further questions that aren't answered here? We'd love to hear from you, and learn how we can help you be as successful as possible in this wonderful hobby.

You can call in to 727-214-7750 to speak with Tyler from our team to determine how to create your Ideal Aquarium Build.

Also feel free to reach out to us at and we will aim to respond back within the next few hours.


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★ Read Reviews of Two Tides

The Proof is in the Result

27 reviews

So...late one night I was shopping online for a new seahorse tank. I ended up on the Two Tides website & in the bottom corner it said to click for a live chat. Since it was after midnight & they’re in the same time zone, I thought no way. But I clicked anyway & sure enough I was chatting with a live person! We chatted for over an hour until he asked for my email address telling me I’d be contacted the next day. That’s when I met Tyler. He helped me with my purchase. He went above & beyond to get me the tank I wanted, even spending a day on a video chat with Pro Clear Aquatics as they searched their warehouse looking for the aquarium I wanted with a blue back. They stopped making these a while back but they found one for me! I absolutely love this aquarium & I can honestly say that Tyler provided THE best customer service I have ever experienced from an online vendor. He told me from the start that he would stay with me from start to finish & he did. He was always there to promptly answer any questions or concerns I had. I can’t say enough about how happy I am with my purchase!

Piece of Art

I was looking for rimless peninsula aquarium to upgrade my 80 Gallon and my 70 Gallon mixed coral reef this year, but had a really hard time finding it because of the coronavirus. So I purchased a ProStar 230 Peninsula from Two Tides and I’m glad I made the right choice. The 3/4” low Iron glass display tank and large glass sump and light weight white stand is just beautiful as a piece of art. Tyler is extremely helpful and responsive and made the process easy and stress free. Everything arrived very well packaged. When we were setting up the tank, we couldn’t believe how easy the setup was with no issues what so ever. If you are looking for a high quality aquarium I highly recommend this company.

Absolutely beautiful fish tank and customer services

I am very happy with my order. The tank is very beautiful of out the box and it was well packaging with feel very safe from shipping damage.

Custom services from Two Tides Aquarium Supply was excellent. I have communicated with Tyler who had assisted me throughout the process from ordering the tank through shipping process, and what to expect on delivery day.

I am highly recommend anyone who want to get a new aquarium, to purchase from Two Tides Aquarium. Best to look for Tyler, he is a very helpful and pleasing person to contact if you have any question. I am glad that I have met him and definitely I would buy again in the future from Two Tides Aquarium supply when I need another fish tank and any other aquarium supply that I may need.

Thank you very much for a beautiful tank.


Great Customer Service

I am very pleased with not only the product I received but the service that came with it. Tyler was in constant contact with me throughout each stage of the process. He answered all questions I had and was even able to provide me with links to plumbing parts I needed for the build. We had a small hiccup with shipping (carrier's fault not Two Tides) but Tyler was able to update me throughout the day. Tyler genuinely cares about his customers and I would recommend the company to anyone looking for their next show room tank!

Great unit

Makes water quickly. Very happy with the unit so far. Pump is quiet, runs great. Finally decided to get a good rodi system. This one has exceeded my expectations way better then any other unit that I've had before. TwoTides Aquarium supply shipped it fast and couldn't be happier with this unit.