AA Aquarium Green Killing Machine 24 Watt Replacement Bulb

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About This Item

Details

  • Promotes dazzling, clear water in your finned friends’ abode.
  • Designed to be easy to install—no tools necessary!
  • Helps remove murkiness from aquarium water.
  • Helps create a green-water-free home for your fish!
  • Suitable for use with the AA 24 Watt Green Killing Machine (sold separately).

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Questions & Answers

1 Customer Questions

Would it fit the pump that came with the 9w set? If not whats the different diameter in the fittings of the tubes?

Answer by Chewy • Jul 23, 2022
This replacement bulb is designed to fit the "AA 24 Watt Green Killing Machine (sold separately)." For the 9 watt option, the "AA Aquarium Green Killing Machine 9 Watt Replacement Bulb" would be suitable.
Reviews
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4.1
Rated 4.1 out of 5 stars
38 Ratings
Terms & Conditions

18 Customer Reviews

Rated 4 out of 5 stars
By Eric on Jan 15, 2026

Great for blooms, so so for parasites

Works great for algae blooms and to help clear up your tank water, BUT if you are wanting to control Ich or Velvet or any parasite outbreak it can help to manage,

Works great for algae blooms and to help clear up your tank water, BUT if you are wanting to control Ich or Velvet or any parasite outbreak it can help to manage, BUT not eliminate it altogether

Rated 5 out of 5 stars
By Howard on Oct 9, 2025

Ingenious design

This is a very clever design that overcomes many of the main difficulties with uv installation. The pump and proper output are set up, no charts needed and mix

This is a very clever design that overcomes many of the main difficulties with uv installation. The pump and proper output are set up, no charts needed and mix and match. No plumbing required. No quartz sleeve to clean, break and replace! Easy bulb replacement! My suggestion for improvement is to use magnetic mounts rather than suction cups. I attached magnets to mine and it holds it in place well.

Rated 5 out of 5 stars
By Tanya on Dec 26, 2025

Bulb is easy to replace.

Bulb is easy to replace in a Green Killing Machine.

Bulb is easy to replace in a Green Killing Machine.

Rated 1 out of 5 stars
By william on Dec 20, 2025

Price was fair

It lasted 3 hour stop working burner out i think

It lasted 3 hour stop working burner out i think

Rated 3 out of 5 stars
By Scherra on Jun 18, 2025

Only lasted 3 months!

We’ve used this AA Aquarium GKM24W UV filter for 3 years now and have been very happy with it but today the LED indicator went off. We just purchased this new bulb

We’ve used this AA Aquarium GKM24W UV filter for 3 years now and have been very happy with it but today the LED indicator went off. We just purchased this new bulb in March and it’s dead in June!! All of our other bulbs have lasted the 6-9 months that this product advertised. Also, the price goes up every time we purchase it.

Rated 1 out of 5 stars
By Alex on Nov 27, 2025

Don't buy

Bulb burnt out in less than a week

Bulb burnt out in less than a week

Rated 1 out of 5 stars
By Donald on May 1, 2025

Burnt out

The bulb burnt out already. The original bulb lasted way longer.

The bulb burnt out already. The original bulb lasted way longer.

Rated 5 out of 5 stars
By Antoinette on Feb 16, 2025

Works every time!

This is an amazing product. You will never be disappointed.

This is an amazing product. You will never be disappointed.

Rated 5 out of 5 stars
By Judy on Dec 8, 2024

Works great!

This is the only thing that really works to clean up the aquarium water

This is the only thing that really works to clean up the aquarium water

Rated 5 out of 5 stars
By Robert on Oct 6, 2024

Great balue for the price!

The digital display not only shows you what the temp of your tank is it also let's you know when it's on.

The digital display not only shows you what the temp of your tank is it also let's you know when it's on.