Aquatic Life

48" DX18 Hybrid Dimmable T5 HO Light Fixture

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Out of stock

Discontinued by Bulk Reef Supply
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A Dimmable T5 HO Aquarium Light Fixture with Provisions for your Favorite LED Modules!

The ultimate way to incorporate both fluorescent and LED lighting over your aquarium in a stylish and compact package. Aquatic Life's DX18 Hybrid Light Fixture accepts four T5 lamps which, when paired with a 0-10V controller like an Apex, allows you to control the overall intensity of the lights through two individual channels. Between having control over your LED's color and intensity as well as the fluorescent bulbs, you can set the perfect PAR levels for your aquarium's inhabitants. 

  • Compatible with ATI and Giesemann Bulbs
  • 0-10v Dimmable Control
  • LED Cord Concealment Built-In
  • Ideal Conditions for Corals
  • Single Power Cord for T5 Bulbs


Why Hybrid?

In our quest to create the perfect lighting conditions for fish and more importantly coral, we have found the mixture of tried and true T5 fluorescent lighting combined with LED creates an easy to use and balanced lighting system. Using either lighting option on its own can be just fine, but both have downfalls that make them visually unsatisfying or lacking in a balanced spectrum. Combining both LED and T5 lighting together can overcome the downfalls, producing great shimmer while having a full spectrum and even coverage of light available for your corals to grow and color up. 


LED Mounting

Included with Aquatic Life's DX18 Hybrid Light Fixtures are rectangular LED module brackets. Each LED module will normally use two brackets and can be secured in the rails built into the fixture's body. The rectangular rails are compatible with many of the major LED brands available like Ecotech Marine Radion XR15 and XR30 models, Aqua Illumination TwentySix, FiftyTwo, and Prime LEDs, Kessil AP700 and many more. If you have circular LEDs like the Kessil A160 or A360x, round LED brackets can be purchased separately.  


T5 Dimming

Without a controller, all four lights will always be at 100% intensity when plugged into an outlet, and having four T5HO lamps on at full blast can be a lot of light, especially for some lower light corals. Controlling the intensity of your fluorescent lights you can slowly ramp up and down the intensity throughout the day. Dimming can be controlled through the 0-10V cable and a controller system and when connected you will get dual-channel control. Each channel includes one light from the front of the fixture and one in the back of the fixture. Connecting the DX18 to a controller is super simple with the included female 3.5mm dual channel plug, no longer will you need to connect a wire directly to the ballast, adding a 3.5mm male to RJ45 cable (sold separately) lets the Aquatic Life DX18 interface to an Apex System or other controllers that have a 0-10V output. 



Dimensions - 49.2" x 18" x 1.88"

LED Mounting Bracket Length - 7"

Power Consumption -  216 watts

Power Cord Length - 112" Total

Ballast Style - HEP Dimmable

Ballast Dimming Levels - 2% - 100%

Channels - 2 (requires controller)

0-10V Cord Type - 3.5mm Dual Channel Stereo Jack

0-10V Cord Length - 36"

Mounting Bracket Length - 7"


What's Included?

1x Four Lamp 54 Watt Hybrid T5 HO Dimmable Light Fixture

1x 0-10v 3.5mm Female Stereo Jack (Dual Channel)

1x Cord Management Strip

4x Rectangular Brackets

10x Bracket Screws

1x Wire Hanging Kit


Note - Bulbs required for use and not included. We suggest using ATI Aquablue Special or ATI Blue Plus lamps. LED modules are not included. 0-10V interface cable and controller must be purchased separately.


pdf Aquatic Life DX18 Dimmable Hybrid Instructions


Tuning Your New LED Light

Most LED lights will actually put out more light than your corals will actually need and without a PAR Meter to test the overall output, it is really hard to guess if the light is too dim or intense. We highly suggest using a PAR Meter to test the output of your lights at different points throughout your tank that you can use to tune the lights output or know where to put specific corals.


More Information
UPC 810957016265
Lighting Type LED/T5 Hybrid
Power Consumption 4x54W
Control Type 0 - 10V
Compatible with Controllers Apex, GHL, 0-10V
Included Mounting Wire Suspension
Color Black
Power Cord Length 9 Feet
Fluorescent Bulb Wattage 54 watt
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Product Questions

I have three Kessil A500x lights and want to know if they’ll fit with the 4" Circular LED Hybrid Mounting Bracket?
Also what is the width of the open area between the T5 lights?

Question by: Dana on Mar 11, 2023, 3:53 PM
Thanks for the questions! The 4" Circular LED Hybrid Mounting Bracket is the bracket you'll need for use with the Kessil A500X. There is roughly 7" between the two banks of T5 lights on this fixutre.
Answer by: Kyle Thomas (BRS Staff) on May 2, 2023, 11:17 AM
I have the old DA controller and prefer not get the Apex at this time. Are there other economical methods available to dim the lights?
Question by: Louis on Jan 30, 2023, 1:07 AM
Hey Louis, thanks for the question! Anything that has a 0-10v connection should work. They hydros controlleer is going to be the cheapest option we carry!
Answer by: James Johnson (BRS Staff) on Feb 15, 2023, 4:40 PM
Is it possible to run this fixture with GHL Mitras 7206?
Question by: MICHAEL WILKSHIRE on Jan 25, 2023, 11:17 AM
Hey there, thanks for reaching out! These hybrids do allow for many LEDs including the mitras
Answer by: James Johnson (BRS Staff) on Feb 9, 2023, 10:51 PM
If I want to hook this fixture up to my Hydros Control x4 via the 0-10V input, I am not understanding what comes with the fixture, and what I would need to buy cable wise to connect it to the Hydros down below (prob 5 ft of distance between the light hanging and my conroller?)
Question by: Lisa DeMayo on Nov 11, 2022, 9:20 PM
Hey there,

Thanks for the question. You would want this cord here https://www.bulkreefsupply.com/hydros-waveengine-0-10v-quad-cable-coralvue.html this would come separately. Thanks!
Answer by: Codey on Nov 22, 2022, 9:48 AM
Which mounting bracket is supposed to be used for mounting Ecotech radions? I know with the older system the 18" brackets were the standard. But when you look up the 18" bracket it says it is discontinued.
Question by: Andrew Arbutina on Jun 29, 2022, 12:49 PM
Hey Andrew, thanks for the question. This fixture will come with the bracket to connect the radions to directly!
Answer by: James Johnson (BRS Staff) on Jun 30, 2022, 2:34 PM
How much does this fixture weigh? Trying to hang it from the ceiling with the included hardware but not sure how to go about it.
Question by: travis on Apr 25, 2022, 11:44 AM
Hey there,
Thank you for reaching out to us. This fixture weighs approximately 20 pounds.

Please let me know if you need anything further and take care!
Answer by: Matt Lucero (BRS Staff) on Apr 26, 2022, 9:09 AM
I want to suspend this from a rail over a 60" peninsula tank, what is the weight of the fixture?
Question by: matt cole on May 18, 2020, 11:11 AM
Hi Matt,

The shipping weight of this fixture is 23.6 lbs so i would assume the weight with bulbs would be close to that. You will also need to factor in the weight of whatever lights you wish to mount on this light.

i hope this helps!
Happy Reefing
Answer by: Nick on May 22, 2020, 4:44 PM
I have a 55 gal...12" wide by 48" long by 24" deep. Can I still utilize this 48" fixture?
Question by: Gilbert Swain on Apr 1, 2020, 8:53 PM
Hi there,

Thank you for reaching out to us! I would not recommend it, your tank is too narrow and would have a lot of light spillover.

Take care
Answer by: Thomas Billington on Apr 2, 2020, 3:42 PM
Do you sell the brackets ro shorten how wide the fixture is. I have an sr80 SMS my display isn't that wide front to back. I also use 48in HMS rail mount for my two hydras 26's that rests on the glass. Will this be to heavy to use with my HMS mount?
Question by: Ej on Jan 4, 2020, 4:47 PM
Hey there!

All the extra end plates can be found here: https://www.bulkreefsupply.com/search?w=aquatic%20life%20brackets&asug=

Take care
Answer by: Thomas Billington on Jan 5, 2020, 10:41 AM
Is this light good enough for a 72in tank ?
Question by: Abraham Ramirez on Nov 26, 2019, 3:13 PM
Hey there!

Thank you for reaching out to us! I would not recommend that size for your tank, I would not go less than the 61" fixture.

Take care
Answer by: Thomas Billington on Nov 26, 2019, 3:33 PM
How wide is the open space between the two sets of T5's, the space for the led's?
Question by: Travis Dees on Nov 16, 2019, 3:58 PM
Hey there-

Thank you for reaching out to us! The gap between the set of T5s using the standard 18" end plates would be ~7.5". If you have any other questions let us know.

Happy reefing! c:
Answer by: Brad Ohmann on Nov 17, 2019, 1:02 PM

Is this an appropriate size for a standard 125 long tank.
Question by: Frankie Amarillas on Nov 3, 2019, 5:04 AM
Hey there-

Thank you for reaching out to us! The 48" will be a little on the small size for a 72" long tank, however either the 5' or 2 x 3' fixtures would both be perfect for your size tank.

Happy reefing! c:
Answer by: Brad Ohmann on Nov 3, 2019, 2:36 PM
Is it possible to run the fixture with a timer and no controller? I love the new design, but don't run a controller or care to.
Question by: Bill Willems on Oct 21, 2019, 10:20 PM
Hey there!

It will have on/off capability but you will not be able to dim it with no controller.

Take care
Answer by: Thomas Billington on Oct 22, 2019, 4:36 PM
Is there an existing Neptune Apex variable speed cable that can be used to dim this lighting fixture?
Question by: Adam Ring on Aug 5, 2019, 8:51 AM
Answer by: Thomas Billington on Aug 6, 2019, 12:27 PM