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Aquarium & Pond UV Sterilizers

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UV Sterilizers by Style
By Type: Hang On By Type: In Tank
By Type: In Line By Type: In Line or Hang On
By Type: Small Tanks By Type: Large Tanks
By Type: For Ponds
UV Sterilizers: Aqua Medic UV Sterilizers: Aqua Ultraviolet
18W to 55W in line UV Sterilizers for aquariums. The Aqua Medic Helix Max uses a "spiraling flow" design to maximize contact time in the compact sterilizer body.
8W to 114W in line & hang on UV Sterilizers for ponds & aquariums. The Advantage and Advantage+ Aqua Ultraviolet Sterilizers are an easy to install hang-on Aqua UV light for small to medium aquariums. For ponds we recommend using the Aqua UV Sterilizers with 2" connections. . .
UV Sterilizers: AquaTop In-Line UV Sterilizers: AquaTop Internal
5W to 36W in line UV Sterilizers for aquariums. We carry both the smaller IL5-UV 5 Watt & IL10-UV 10 Watt Sterilizers that connect on the ends, and the larger 18 Watt and 36 Watt Eliminator Series UV Sterilizers with water connections on the side and mounting brackets.
5W to 13W internal UV Sterilizers for aquariums. We carry both the smaller UVE-7, UVE-9 & UVE-13 sterilizers and the larger UVCP-9 & UVCP-13 UV Sterilizers. These sterilizers all have an integrated pump. No plumbing or sizing of correct pump necessary.
UV Sterilizers: AquaTop Submersible UV Lamp UV Sterilizers: Aqueon QuietFlow
3W to 10W internal UV Sterilizers for aquariums. The AquaTop Submersible UV Lamps work best with the AquaTop Power Head. These UV lamps are the perfect way to control free-floating micro-organism as well as disease causing pathogens.
9W & 18W hang on the aquarium UV Sterilizers. Include pump and is easy to set up. No plumbing necessary.
UV Sterilizers: Coralife Turbo Twist (New Style) SALE!! UV Sterilizers: Emperor High Output SS
9W, 18W & 36W hang on or in line UV Sterilizers for aquariums. The Coralife Turbo Twist UV Sterilizers feature a unique twist flow design that guides water flow more evenly through the sterilizer, increasing exposure to ultraviolet light and improving the treatment of unwanted. . .
80W to 320W in line UV Sterilizers for ponds & aquariums. These steel UV Sterilizers are the largest we carry and are typically used for ponds from 7,000 to 24,000 gallons.
UV Sterilizers: Emperor Smart SALE!! UV Sterilizers: Emperor Smart HO Multi-Lamp
25W to 150W 3" or 5.75" diameter body in line UV Sterilizers for aquariums & ponds. The design of the Smart UV Sterilizers is the result of a calculated balance between equipment size, cost and performance; making Smart UV Sterilizers the best option for Koi Pond disinfection.
100W to 300W in line UV Sterilizers for ponds & aquariums. These multi-lamp uv sterilizers are for ponds up to 28,800 gallons.
UV Sterilizers: Emperor Smart Lite SALE!! UV Sterilizers: JBJ Nano-Zapp
18W to 80W 2.5" diameter body in line UV Sterilizers for aquariums & ponds. These Smart Lite units have smaller bodies than the Smart units. Smaller bodies have less water to be treated inside—explaining the lower tank/pond size ratings and lower prices.
3W submersible aquarium UV Sterilizer. A great choice for nano tanks. Can easily fit in many nano-tank filter compartments.
UV Sterilizers: JBJ SUBmariner UV Sterilizers: Laguna UV Sterilizer/Clarifier
5W & 9W submersible aquarium UV Sterilizers. These UVs have a built in pump and can be installed in the tank, sump or filter compartment.
14W, 28W & 55W in line pond UV Sterilizers. Features LED indicator lights and Click-Fit connectors.
UV Sterilizers: Lifegard Aquatics AquaStep Pro UV Sterilizers: Lifegard Aquatics QL-Series
15W & 25W in line aquarium UV Sterilizers. The AquaStep Pro features a Clear View Port to see if the Sterilizer is working. This Sterilizer will stand on its base, unlike other Sterilizers.
15W, 25W & 40W in line aquarium UV Sterilizers. This Sterilizer can also be used with a pond (Raintight Kit recommended for pond use).
UV Sterilizers: Turbo Twist Pond SALE!! Lamps (bulbs): Aqua Medic
9W, 18W & 36W in line UV Sterilizers for ponds. The Coralife Turbo Twist POND UV Sterilizer features a unique twist flow design that guides water flow more evenly through the sterilizer, increasing exposure to ultraviolet light and improving the treatment of unwanted. . .


Lamps (bulbs): Aqua Ultraviolet Lamps (bulbs): AquaTop




Lamps (bulbs): Aqueon Lamps (bulbs): Coralife Turbo-Twist




Lamps (bulbs): Custom SeaLife Lamps (bulbs): Emperor Aquatics




Lamps (bulbs): Laguna PowerClear Lamps (bulbs): Laguna Pressure-Flo




Lamps (bulbs): JBJ Lamps (bulbs): Lifegard Aquatics




Lamps (bulbs): Pondmaster Parts: Aqua Ultraviolet




Parts: AquaTop Parts: Coralife Turbo-Twist




Parts: Emperor Aquatics Parts: JBJ




Parts: Laguna Parts: Pentair (Rainbow Lifegard)




Parts: Pondmaster



What is UV Sterilization?
It's a very simple process using ultra violet (UV) light for rendering sterile unwanted free floating bacteria, algae and parasitic organisms, like ich. The UV sterilizer light affects the living cells by altering the structure of the cell's nuclear material. The end result is the organisms fail to reproduce, eradicating your aquarium or pond water of these unwanted nuisances.

Functionally, UV sterilization is done by running water in an out of a chamber that contains a UV sterilizer light bulb. The UV sterilizer bulb is usually contained in a glass (quartz) sleeve that is in the shape of a test tube.

How are they set up?
There are THREE types of UV sterilizer set-ups, the in-line , the in-tank (or in-pond) and the hang-on types (some sterilizers can be hooked up as a hang-on or an in-tank sterilizer). The in-line set-up usually has the sterilizer under the tank (or beside a pond) in line with a pump and filter (if a mechanical filter is used). Hang-on uv sterilizers have a mechanism for hanging the uv off the back of an aquarium. This is often easier to set-up, but hobbyists often prefer the in-line set-up because it removes the somewhat unsightly piece of equipment from view. You could also hang a hang-on uv from a sump. The JBJ SUBMariner comes with an integrated pump and is placed directly in the aquarium.

UV sterilizers require a pump with a certain flow rate to run water through them. It is critical that the pump put out a flow rate within the acceptable range of the uv sterilizer. These acceptable flow rates are listed next to all the uvs we sell in terms of gph (gallons of flow per hour). The flow rate depends on whether you are using the uv in a pond or aquarium and if you are using the UV to sterilize bacteria or clarify the water (sterilize the algae). In the case of hang-on uv sterilizers we've also recommended pumps to use with the UV.

How about UV sterilizer safety?
UV sterilizer light can be damaging to the human eye so DO NOT look into the bulb. Always unplug your unit when working on it to prevent possible shock if it breaks and gets wet.

Who needs a UV sterilizer?
UV Sterilizers are recommended for all saltwater and freshwater aquariums and for ponds.

What can be eliminated with a UV sterilizer?
  • UV sterilizers will eliminate protozoan parasites such as ich during the new born, free swimming life cycle stage of the parasites. NOTE: They do not eliminate the ich parasites once attached to the fish. UV sterilizers can be used with other methods to treat ich.
  • UV sterilizers will sterilize free floating algae. It will not sterilize algae that is stuck to your glass or embedded in your live rock. The algae needs to go through the UV sterilizer to be sterilized.
Can UV Sterilizers have negative effects?
Yes. UV can alter the structure of some dissolved chemical compounds. When using any drug or chemical medication check the directions for the drug or chemical to see if you should turn off your UV when using the drug or medication.

Many aquarists only use a UV sterilizer during the day. There are many free floating beneficial planktonic animals in the water that come out at night that can be killed by a UV sterilizer. You can put your UV on the same timer as your lighting system.

UV Sterilizer Maintenance
UV sterilizer bulbs with four pins at one end should be replaced once a year. Lamps with two pins at each end should be replaced every six months. They will lose intensity over time and after these respective periods of time the loss in intensity is likely to be critical.

Depending on how clean the water is going into the UV sterilizer, you may need to clean your UV sterilizer quartz sleeve. If the UV light from the bulb can't penetrate the sleeve, then it won't reach the water that flows around the quartz sleeve. The quartz sleeve can be cleaned with white vinegar.

Flow Rates
The recommended flow rates and required wattage for tanks may not seem consistent between manufacturers. The Emperor 25 Watt UV Sterilizer is rated for 125 gallons. The Aqua Ultraviolet 25 Watt UV Sterilizer is rated for tanks up to 100 gallons. The Pentair Aquatics 25 Watt UV Sterilizer is rated for 200 gallons. The Coralife 18 Watt is rated for 250 gallons. Some of this may be because the manufacturers are measuring things differently. For Example: Emperor Aquatics' recommended flow rates are based upon when UV sterilizer lamps are operating at their 60% end of life efficiency. Additionally, flow rates may be comparing apples and oranges because they may be referring to the effective kill rates of different organisms.