Smart UV 25 Watt - Pentair Aquatics

Emperor Aquatics Smart UV 25 Watt
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  • Emperor Aquatics Smart UV 25 Watt
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Smart UV 25 Watt - Pentair Aquatics

67% Recommend this to a friend (6 of 9)

SKU: 204904

reg. $359.99

Special Price: $305.99

In Stock: 19
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Quick Overview

Emperor Aquatics is now Pentair Aquatic Eco-Systems.

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 Pentair 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

Pentair Aquatics SMART UV series features a compact space saving design which utilizes a 3" reaction chamber. When used properly UV Sterilizers significantly reduce the chance of encountering disease or algae outbreaks.


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 Pentair 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.


Pentair 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.
  • Pentair 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 SizeNo. Lamps/WattsWater Flow Rate Algae and Bacteria 30,000 µWs/cm² Suggested/MaximumWater Flow Rate
180,000 µWs/cm² Suggested/Maximum
Input WattsUV-C Output WattsDimensions (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


9 Items

  • Cheap Ballast By Jennifer on 10/22/2017

    Had to replace ballast 2x in as many years. Called tech support and both times they told me bulb was bad. Bought bulb each time and it was ballast!!! Spent more on parts than I paid for it!!! I would give this a no star if I could, Do Not Buy!!!
  • "C" is an idiot! By FC on 10/10/2017

    Pentair Aquatics makes the best UV sterilizers in the market and this is why BRS does not offer other brands. Regarding C's comments: When you make a mistake just leave with it and don't blame others. Those UV sterilizers are built like tanks, this is why finding main part components is not easy. I guess BRS and Pentair Aquatics are not used to deal with morons like you this is why you are not getting anywhere.
  • Superior product By Scott on 7/11/2017

    When you have hundreds of dollars invested in your tank, a UV sterilizer is definitely at the top of the list. I have tried the cheaper brands and their durability, quality, and stability is not there. I bought a 50 watt SHO from BRS around 4 years ago for my 160 gallon. With no carbon use, the water looks like fish swimming in the air. No problems with infection or deaths. With previous products, that was not the case. I replace the bulb yearly and that is it.
  • 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.


Ask a question

Product Questions

I plan on using this in my main display tank, even though I will quarantine all fish & dip all corals, so what rate flow would you recommend for preventing any sort of diseases or outbreaks in my main display tank for prevention?
Question by: Richard on Jun 6, 2017 5:05:00 PM
To get a reliable kill rate on disease organisms such as protazoans and bacteria, you'll want to have a maximum flow rate through this unit of 130gph. Typically the goal is to have the tank volume run through the sterilizer at a rate of about 1x per hour, so these two factors will determine the proper size of UV to get for your tank.

Happy reefing!
Answer by: Zack (Admin) on Jun 13, 2017 4:17:00 PM
Do you guys have any research on what, if any, impact the use of UV has on ORP? I am seeing some suggestions that it can potentially boost ORP and am a bit curious if it would be worthwhile to have my ORP sensor control when to run the UV.
Question by: Eric on Mar 29, 2016 2:35:00 PM
Great question!
Unfortunately we have not looked into UV's effect on ORP. We still us ORP in conjunction to keep consistent levels when dealing with Ozone however UV should not have the same impact as Ozone on ORP levels. Feel free to let us know if you have any further questions!
Answer by: Connor (Admin) on Mar 31, 2016 3:19:00 PM
Do you stick or recommend where I can get the right pipe clamp support to mount this model?
Question by: Rory on Jan 26, 2016 6:01:00 PM
Great question!
We do not have the mounting option for the UV sterilizer for sale however it may be available through the manufacturer directly. Feel free to let us know if you have any further questions!
Answer by: Connor (Admin) on Feb 3, 2016 3:38:00 PM
What size pcv pipe holder will I need to secure this sterilizer?
Question by: david brennom on Jun 16, 2016 7:16:00 AM
Great question,
You will need the 3" PVC pipe clamp. This will be a slightly loose fit however will hold the Sterilizer perfectly! Feel free to let us know if you have any further questions!
Answer by: Connor (Admin) on Jun 16, 2016 11:36:00 AM
I am VERY interested in buying this UV unit. In doing my research first, I was wondering how often are you having to replace the bulb( not to the day, just a ballpark)?
Question by: Chris DeLaro on Jan 17, 2016 3:44:00 AM
Great question!
For best performance you will want to replace the bulb once every 1-2 years to keep up with the proper amount. Feel free to let us know if you have any further questions!
Answer by: Connor (Admin) on Jan 26, 2016 6:07:00 PM
Will this kit provide me with everything I will need or do I need to get a pump, tubing, etc...? I am Fairly new at the hobby and hadn't used a UV sterilizer before.
Question by: Chris DeLaro on Jan 17, 2016 3:54:00 AM
Great question,
This will not come with any of the plumbing supplies. However this can be plumbed in to make it barb fitting which can work with 1/2" tubing. This is a common size for most pump and would work well!

1⁄2” Schedule 80 Straight Barb x Male Thread

Reducing Bushing 1 1/2” Spigot x 1/2” Female Thread
Answer by: Connor (Admin) on Jan 26, 2016 6:16:00 PM
What is the difference between the Smart UV 25 watt and the 25 watt lite. I see that the lite is rated for a 90g while the other is 130g. Why?
Question by: Jeremy on Mar 27, 2016 1:56:00 PM
Great question!
The difference will lay on the size of the water to flow through the reactors. The Lite is a smaller design with less contact time for the water. Feel free to let us know if you have any further questions!
Answer by: Connor (Admin) on Mar 28, 2016 6:55:00 PM
Of the 2 water flow rates(algae+bacteria or protozoa), which would be the more appropriate for controlling dinoflagellates?
Question by: Marc on Jan 23, 2016 9:03:00 PM
Great question!
The best flow option would be the Bacteria, Algae flow as this will not help to sterilize established algae or Dino but rather will keep free floating forms in the water column from reproducing. Feel free to let us know if you have any further questions!
Answer by: Connor (Admin) on Feb 3, 2016 11:10:00 AM
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