Emperor Aquatics Smart UV 25 Watt

SAVE $54.00
Emperor Aquatics Smart UV 25 Watt
Click on image to zoom
View full size image

More Views

  • Emperor Aquatics Smart UV 25 Watt
  • Why should I use a UV sterilizer?
  • Emperor Aquatics Smart UV 25 Watt with Ballast
  • Emperor Aquatics Smart UV 25 Watt Left Side

Emperor Aquatics Smart UV 25 Watt

67% Recommend this to a friend (4 of 6)

SKU: 204904

reg. $359.99

Special Price: $305.99

Please wait...

Orders over $75

Ship Free

$4.99 Flat-Rate Shipping

What's this?

Ships today
order in
3h 54m

Quick Overview

Why does BRS recommend this?

When it comes to UV most other companies will recommend a small UV for a large tank which in reality won’t do much more than make your water look a bit clearer.  If your ultimate goal is to keep bacteria, protozoa, and other free floating pathogens at bay there really is no better choice than Emperor Aquatics for UV sterilizers.  With their real world ratings, we have tried other UV sterilizers and really nothing else has come close.  Even though they are a bit more expensive than other brands, their performance makes them worth every penny.

Suggested Aquarium Size: 130 gallon or less

  • Inlet/Outlet: 1.5" Slip Unions

  • Minimum Operational Flow Rate: 79 GPH

  • Maximum Operational Flow Rate: 133 GPH

Emperor Aquatics SMART UV series features a compact space saving design which utilizes a 2" reaction chamber. When used properly UV Sterilizers significantly reduce the chance of encountering disease or algae outbreaks.


Related Products

Ask a question

Product Questions

Did you mean to say that the UV Sterilizer has a body diameter of 3 inches?
Question by: John on Jul 16, 2014 4:50:00 PM
Hi John,
Sorry I don't quite follow your question but this unit does have a body with a diameter of about 3.5"
Answer by: Bulk Reef Supply on Jul 16, 2014 4:50:00 PM

Full Details

SMART UV Manufacturer's Manual

UV sterilizers are most effective as a preventative measure against disease outbreak. While not infallible a properly sized and set up sterilizer will add a significant barrier to disease outbreak. Protecting your system and it's inhabitants will ultimately save money, promote long lived healthy fish and increase satisfaction received from the hobby. Sterilizers can also be used as a component of an effective strategy to current outbreak. Primarily to help ensure the outbreak doesn't re-emerge after treatment. Anyone who has had the misfortune to encounter an outbreak will appreciate the importance of preventive measures against future problems.


Bulk Reef Supply carries only the Emperor Aquatics line of UV Equipment because we feel they are the best UV sterilizers available to the aquarium industry and one of the few brands that offers legitimately sized units capable of fulfilling their claims.


Emperor Aquatics UV Sterilizers are superior to the competition in the following ways:

  • Sterilizers are accurately sized based on contact time, flow rate and tank volume to achieve realistic results.
  • Suggested sizes are based on end of bulb life to ensure continuous results
  • Suggested flow rates factor in the water clarity and UV Transmittance of typical aquariums rather than basing them on purified water.
  • Unique design maximizes the effective contact time by utilizing the full bulb length.
  • Emperor aquatics is trusted by zoos, universities and public aquariums including Duke University, Monterey Bay Aquarium, SeaWorld, Georgia Aquarium, USDA Agricultural Research


25 Watt SMART UV Sterilizer Specs

Model No. Maximum Aquarium Size No. Lamps/Watts Water Flow Rate Algae and Bacteria 30,000 µWs/cm² Suggested/Maximum Water Flow Rate
180,000 µWs/cm² Suggested/Maximum
Input Watts UV-C Output Watts Dimensions (Inches) Inlet/Outlet
02025 130 Gallons 1/25 472 GPH/788 GPH 79 GPH/131 GPH 25 8 29" x 3½" 1½" Union


*Suggested flow rates are based on 80% power or "end of lamp's life" performance

*Maximum flow rates are based on 100% power or new lamp output

*Flow rates consider 90% UV transmissibility



6 Items

  • Best in Class By jellyteam on 9/15/2015

    When you get a UV sterilizer it needs to be made out of UV resistant plastic. This unit is. It also has a large viewing window that lets you see your bulb and water flow. I have other units by emperor on several commercial units, they never fail.
  • I think it works but way over priced for what it does By Kristen on 12/23/2014

    Bought this UV to suppress ick in my tank. Although it was made out of high quality "plastics", I still can't find any reasons as why it cost so much. This UV don't have the feature of adjusting water flow or warns you if the UV bulb needs to be replaced, so there's nothing "SMART" about it. Why they even call it a smart UV?
  • well built, very good support! By D on 4/16/2014

    I wish that i could comment or reference "C" in this comment but is seems, that person is just for lack of better terms "special" in more ways than one. I am a tinkerer and i took the whole thing apart when i got it. if it un-scewed or came off i did it. thus i fried mine as well. i called customer service and had a very polite gal on the line, who got my plastic and bulb in the mail to me and i received it very fast for where i live..... the story ends with this, some people such as "c" are just people that wont take responsibility for their actions and are just pissed of at the world that their lives suck and that they have no education or manners to make the change.
  • Well built, very poor support. By C on 1/16/2014

    Just my 2 cents and heads up to anyone who plans to invest in this pricey UV. I guess I did not seal the unit perfectly and after three weeks a small leak caused the bulb contact to short out. Did not realize it until it just didn't light up anymore... Slightly melted plastic at the bulb contact point and gummed up o ring's. I understand, my stupidity I guess. Not EA's fault. I should have checked and double checked the seals better before putting into use. So due to the slight damage, I need to replace the plastic parts where the quartz sleeve is held, new o-rings, etc. power supply connector and of course a new bulb. Should be a easy fix I thought. Contacted EA and was referred to buy the parts from BRS. BRS, only carries some of the parts and EA was not helpful at all to help in getting me the other replacement parts. I think after attempting to get the few parts I need, I mine as well buy another new unit. Would be less trouble and probably the costs would not be far apart. Expensive little mistake... Be careful using this near water. As separate parts seem to be not easily accessible. I assumed something of this caliber would have a great backing from the company. One of the very few experiences in my life I thought I was buying the best of the best and after three weeks, it is going in the garbage can. I had junk fish gear that lasted me longer than this and easier to get fixed. Just my experience with support. UV probably works great if it worked for me.
  • Best By Gasman on 9/16/2013

    If you are going to buy a UV sterilizer,Emperor is the one to get.Consider it an insurance policy against Algae and disease out breaks.It won't prevent either,but it will decrease their severity from catastrophe to something you can manage.You will also enjoy clearer water.
  • solid By Pius W on 8/29/2010

    I have been using UV on my reef tanks for over 20 years now and tried virtually every brand of UV sterilizer there is. Emperor aquatics is by far and away the best one out there. I would give it 6 stars if i could. This thing looks and feels like it belongs at seaworld rather than my home.

Write Your Own Review

You're reviewing: Emperor Aquatics Smart UV 25 Watt