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Product label 39W Aquarium T5 Fluorescent Blue Plus + Tube Bulb

  • 39W Aquarium T5 Fluorescent Blue Plus + Tube Bulb
  • 39W Aquarium T5 Fluorescent Blue Plus + Tube Bulb Colour
  • 39W Aquarium T5 Fluorescent Blue Plus + Tube Bulb Spectrum

39W T5 Blue Plus +

39W - 850mm / 34” (l) – 5/8”- 16 mm(w) BLUE PLUS delivers an intense blue light with the properties of a blue tube and an actinic tube.The unique spectrum enhances the vibrant blue colours of your corals.

Availability: In stock

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PLEASE NOTE: These bulbs are not compatible with JUWEL Aquarium Lighting Units

39W - 850mm / 34” (length) – 5/8”- 16 mm (diameter)

High Output T5’s are better to use in your aquarium lighting than the regular T8 as they have increased water penetration and are more efficient.  You don’t lose the illumination at the bottom of the deeper tanks.

With this lighting you are not restricted as much to the content of your aquarium, stock levels can be increased without the worry of inadequate levels of light.

The greater intensity, deeper penetration and Higher output allows you to stock your tank with a wide range of soft corals and allow them to flourish which was not possible with T8 Fluorescents.

Why T5's

Key Benefits of our High Output T5's:

  • Greater Intensity
  • Deeper Penetration
  • High Power

The iQuatics Blue Plus bulb delivers an intense blue light with the joint properties of a blue tube and actinic 03 tube peaking at 420nm. The unique spectrum enhances the vibrant fluorescent colours of your corals as well as providing high PAR ideal for those deeper tanks to give you the light required for keeping corals at the greater depths.

The iQuatics Blue Plus is one of the post popular actinic bulbs available. It helps to balance out the washed out yellow hue in your aquarium. The iQuatics Blue Plus works well as a supplement to metal halides or in combination with iQuatics Marine White 14000K.

24W – 550mm/22” (length) – 5/8”- 16 mm (diameter)
39W - 850mm / 34” (length) – 5/8”- 16 mm (diameter)
54W - 1150mm / 46” (length) – 5/8”- 16 mm (diameter)
80W - 1450mm / 58” (length) – 5/8”- 16 mm (diameter)

How Iquatics reflectors can benifit your aquarium

*International Delivery Available - We are unable to insure T5 Tubes internationally, a credit note will be issued in the unlikely event of items arriving damaged, this credit note does not cover postal cost.

Buy from iQuatics and benefit from:

  • Industry Leading Aquarium Lighting Customer Service
  • High Quality Brand New Boxed Goods
  • FREE Fast UK Delivery


Compatible with Arcadia, Giesemann, ATI, Korallen-Zucht,All Pond Solutions,Fluval
Tube Width 16mm
Total Watts 39
Replacement Tubes 39w HO T5 tube
Tube Length 34" (850mm end to end/without pins)
Width 16mm
Colour Vibrant Blue
Base/Connector G5/T5
Mounting Method Lighting Pendant/Electronic Controller
Pin Distance 5mm centres
Length Without Pins 850mm (Approx)
Length With Pins 862mm (Approx)
Use Marine/Tropical
Use With iQuatics Reflectors Yes
Instructions Follow YouTube video for installation
Type of Ballast Required Electronic
Specification Standard IEC specification

Customer Reviews

Great delivery! – Review by Danny (Posted on 22/10/2019)
Fantastic delivery and a great price.
Excellent tubes, excellent service – Review by SallyW (Posted on 27/09/2017)
I ordered these tubes on a Sunday evening and they had arrived, excellently packed, by the Wednesday. I have previously used iQuatics for tubes before and again they didn't disappoint in quality or service.
Fantastic blue – Review by Kris (Posted on 11/08/2017)
Product arrived promptly and packaged well. These are great tubes to combine with a white marine or a 50/50 tube.
Far better price than the competition too !
T5 fluorescent blue light – Review by Christian Samuel (Posted on 13/04/2017)
Order this and it came really fast it was packed away really well 10 out of 10
Brilliant – Review by Myles (Posted on 03/12/2016)
Very good piece of equipment, works very well and the light coverage is excellent, right to the bottom of the tank, also very well packed and fast service.
Exceeding expectations – Review by Kaz (Posted on 25/11/2016)
Replacing T5 bulbs on a tank I wish to sell, so didn't want to spend a fortune. Really impressed with the speed, packaging and quality. Will definitely use again.
Stunning – Review by Mourne man (Posted on 11/10/2016)
My bulbs arrived only 3 days after they were ordered. The packaging was second to none. The delivery man could've kicked them the whole way to Ireland and they'd still have survived the packaging was so strong. Will definitely be using iquatics again
very blue! – Review by exploringinger (Posted on 13/07/2015)
Yet again great service..good price, fast delivery but most of all great product
Great stuff! – Review by Jacques (Posted on 23/09/2014)
I have a four foot marine tank that is well established and thriving. Soft corals and fish/invertebrates. The product quality seems great, it was well packaged and frankly the service was brilliant. I was after some advice on my lighting and the team were really helpful, exchanging several mails with friendly advice on what I might want to try. I bought 6 t5 tubes plus the reflectors and was very impressed with all of it. Great job iQuatics!
Now this is blue :) – Review by Edward (Posted on 25/08/2014)
Wow, the amount of blue this puts out is amazing. And with a Marine White bulb, my aquarium looks fantastic.
T5 Blue Plus – Review by wojtek (Posted on 06/05/2014)
Very good products
great product – Review by jawfish (Posted on 24/04/2014)
Great tubes they have transformed my tank. I have been looking for this type of tube for a very long time.I will be back.
5 star – Review by george (Posted on 14/04/2014)
Have used these before top quality tubes would use again 100/percent good price exellent package fast delivery
lovely – Review by pete23 (Posted on 10/04/2014)
excellent would recommend
Perfection,,,,again – Review by Karen Dooley (Posted on 02/04/2014)
Another happy customer. There was a delay in receiving this product, I was kept in touch, given a free gift, even though it was not iquatics fault, so many companies can learn from this one, well done and thanks.
As Described – Review by Jeremy (Posted on 13/03/2014)
Item as described, quick shipping, thanks a lot
Very Blue! – Review by exploringinger (Posted on 12/02/2014)
Very good and fast delivery, tubes are very blue very good when isolated from other tubes.....price is amazing.
Great Service – Review by Kev (Posted on 12/01/2014)
Great service, will defiantly use your service again, thanks..
T5 Bulbs – Review by Crossi (Posted on 10/01/2014)
Excellent service fast delivery and a great price too very happy with the bulbs and will definitely buy again and recommend to other users
Great – Review by Pauline (Posted on 27/08/2013)
great shop order came to Ireland 3 days after ordering off website,goods where well package and great price THANK YOU
Love iQuatics !! – Review by Stan (Posted on 17/07/2013)
Super-fast Delivery & Excellent lights for the price
Bright – Review by Mark (Posted on 03/06/2013)
Quick delivery, nice bright blue tubes many thanks
Same as usual – Review by Bob (Posted on 03/06/2013)
as usual 100% more than happy.
Impressed ! – Review by gavgood (Posted on 09/11/2012)
Good light tubes delivery defiantly Recommended !
5 Star products and Delivery – Review by Goodrood (Posted on 11/09/2012)
A high quality product at a very reasonable price. Packaging and delivery is second to none.
Excellent all round

Write Your Own Review

You're reviewing: 39W T5 Blue Plus +

Tip: T8 Tubes are 8/8 inch (1 inch) in diameter (26mm). T5 Tubes are 5/8 inch in diameter (16mm). When measuring the length of your tube, measure in mm from end to end without the pins.

Product Questions:

Posted by jason on Tuesday, 27 September 2011


Hi, I have a Redsea Max 250. I was told I need to replace the bulbs every 6 months, could you please tell me if this is correct and if so tell me which ones i need to order?


  • Posted by Richard Latham on Tuesday, 27 September 2011
    The tubes you require are the 39w T5 850mm tubes. The most popular combination we find is 2 x Marine White 14000k, 2 x 50:50 Aquablue and 2 x Blue Plus.
    1 people found this answer helpful.
Posted by Nathan on Tuesday, 27 September 2011


Does your buy 2 get one free offer on bulbs only work with the same bulbs? eg if I buy 1 blue + and one 14k can I get another bulb free or do I have to buy 2 of the same bulbs for the third?


  • Posted by Richard Latham on Tuesday, 27 September 2011
    You can mix and match the t5 tubes and still take advantage of the Buy 2 get 1 free offer. The cheapest tube will be the free one.

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