Coralife BioCube Aquarium Mini Ultraviolet Sterilizer

By Coralife
Rated 4.0435 out of 5 stars
$40.30 (-58%)Chewy Price
$96.99Chewy Price
In Stock
FREE 1-3 day delivery

About This Item


  • Ultraviolet sterilizer designed to help keep your aquarium clean.
  • Kills free-floating algae, microorganisms and harmful bacteria.
  • Ensures your underwater buddies have a healthy place to swim.
  • Features a low-voltage ballast and 5-watt bulb.
  • Includes a universal adaptor for use with small aquariums.

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Questions & Answers

7 Customer Questions

- sizes 14, 29? What is the volume? thanks
Answer by ChewyFeb 24, 2022
The volume for this sterilizer has not been recorded as it does not move any water. It connects to your existing BioCube pump. The dimensions of this sterilizer are 8.4 x 4.5 x 2.4 inches.

Can this be used in a 10 gallon tank
Answer by ChewyNov 11, 2021
This sterilizer is intended for use with BioCube sizes 14, 29 amd HQI.

This fits in the 16G Nano, too? It says 14,29...
Answer by ChewyAug 28, 2021
This product is designed to fit inside all Oceanic BioCube aquariums and Coralife BioCube Aquariums, including the newer Coralife Size 16 and Size 32 LED BioCube Aquariums.

Where can I get replacement bulbs?
Answer by ChewyMar 09, 2020
At this time, replacement parts are available separately through the manufacturer.

ReviewsWrite a Review

Rated 4.0435 out of 5 stars
23 Ratings
Would recommend to a friend

23 Customer Reviews

Rated 5 out of 5 stars
By Matt on Apr 15, 2023

Works great!

These UV Sterilizers work great and fit perfectly in my Biocube 32. I have had one on my mixed reef for about 9 months and it keeps the water clear and the unwanted algae away. Decided to just buy a whole new one as a replacement when the bulb burned out on the old one because it was cheaper than buying the replacement bulb fixture and housing. Thanks Chewey!

Rated 1 out of 5 stars
By SaltwaterReefer on Jun 15, 2022

Worked awesome for 2 months then died

I was initially very happy with the Coralife Mini UV sterilizers. Super easy to plumb into my nano tanks and seemed to control the algae quite well. However, I noticed an algae bloom happening on my saltwater nano tank and realized that the sterilizer was not on. I opened up the case and found the bulb was burned out. The exact scenario just happened with the other Coralife Mini UV sterilizer that I had on my freshwater tank. Both sterilizers burned out almost exactly 2 months from plumbing into my tanks.

Rated 3 out of 5 stars
By Rachel on Nov 8, 2021

Short bulb life - great while it lasted

This worked well to help with my dinoflagellate problem in my 14g biocube. Sadly, the bulb burned out after just 4 months of use, and the price for a replacement is practically the cost of a new UV sterilizer unit. At this rate, the cost of the bulbs make this a bad investment...

Rated 4 out of 5 stars
By MW on May 5, 2021

Probably good for small tanks..

The tank we own is a smidge too large to be compatible with this sterilizer unfortunately. My husband says we'd need an additional part in order to get it to to be usable in our tank and even so I don't know that it would be much use since this is designed for use in smaller fish tanks. Despite my lack of research into this before purchasing, I do think this is a brilllant product with a great use. I am curious as to the light bulb replacement issue that others have brought up. I will use this when we get a smaller tank and new fish! Product received for free in exchange for an honest review.

Rated 3 out of 5 stars
By kayak11 on May 14, 2021

i couldn't figout how to use the Universal adapter

I could not figure out how to use the universal adapter to install on my none bio cube tank. I asked Chewy how, and the directions chewy sent me didn’t include how to install the adapter. I was unable to use it. I received this product in exchange for an honest review.

Rated 5 out of 5 stars