Hidden LED Lighting System

Brighten up your tank with our freshwater, saltwater and reef aquarium LED lighting systems.
  • Brighten up your tank with our freshwater, saltwater and reef aquarium LED lighting systems.
  • Freshwater, saltwater and reef aquarium LED lighting.
  • 17" Hidden LED Lighting System
  • 19" Hidden LED Lighting System
  • Image 5
Product Articles
LED Flip Book
Product No. NV33109
Find a Store In Stock

Freshwater, saltwater and reef aquarium LED lighting.

Marineland’s latest innovation brings the light to the inside of your aquarium. Exclusive in-frame mounting allows you to see the light without seeing the fixture, and integrated cord routing helps to complete the illusion. The directional adjustment dial gives you the ability to shine the light where you want it. These lights are fully submersible, and come with suction cups to give you endless possibilities on how to use these systems.

  • Pleasant general illumination for most aquariums
  • Control over the light while keeping the consumer’s hand dry.  Also allows for a night light feature.
  • Energy and cost savings
  • Unlimited opportunities for customized lighting options
  • Provides powerful light without adding distracting fixtures on top of the aquarium
  • Completes the illusion of the hidden fixture
  • Allows the consumer to direct the light where they need it
  • Bulbs never need replacement
  • Reduced cord clutter
  • Adjustable to fit your aquarium
  • Quality assurance
Hidden LED Lighting System is rated 3.8 out of 5 by 30.
Rated 4 out of 5 by from Good customer service, nice low profile light I purchased one of these LED strips that stopped working after a few months. Customer service was excellent; over email they agreed to ship me a new light at no charge. They only asked for a lot number on the unit and where to send the replacement. The replacement has been working great for over a year now and gives a nice low profile on the tank. Bright enough for the anubias in my 20 long.
Date published: 2016-11-07
Rated 5 out of 5 by from So Far, So Great!! Ok ..finally went ahead and purchased the 21" Hidden Led - was concerned on how to mount on my Eclipse 3 Hood - was actually pretty simple. Removed the entire light fixture, leaving just the hood, attached the Hidden Led to the back rim and ran the wire through the cutouts in the back ....attach the suction cup-switch to the side and voila! LED is brighter than the fluorescent ..and the "shimmer"action gives the tank a realistic feel. The blue 'nighttime' setting is a lil dark for my taste but can live with it. All and all, pretty happy with the purchase! Will keep ya posted ..but good job so far Marineland!
Date published: 2016-05-26
Rated 5 out of 5 by from Great lighting option This light came with my 27 gallon cube tank. It was easy to clip on and everything on it hides well. I adjusted the angle and it makes the colors on the fish really stand out. The night lighting on it makes the brighter colored fish stand out. I have recommended this lighting system to family and friends for their tanks.
Date published: 2016-02-28
Rated 3 out of 5 by from I like this product but when the led stops working you have to buy a whole new one cause they don't sell replacement lightsI like this product but whe I like this product but when the led stops working you have to buy a whole new one cause they don't sell replacement lightsI like this product but when it goes out you have to pay 55.00 to 75 for a new one.
Date published: 2015-10-30
Rated 5 out of 5 by from Incredible Warranty Service... Purchased the "21 inch LED ,but, after 2 months filled with water. The Hidden LED Bar is such a incredible product, that I contacted Marine and for replacement. Received the LED Bar , and will continue to be a long standing customer for life...Thanx Marineland.
Date published: 2014-12-16
Rated 5 out of 5 by from I love the fact that this has a day and night light. I was very pleased to see how easy this was to adapt to our existing unit and how quickly it was to install
Date published: 2014-12-03
Rated 4 out of 5 by from Much better than the LED hoods These light bars nicely light up the aquarium and don't (yet) seem to have the problems encountered with the LED hoods. Used with a glass canopy, they lend a very nice look to the aquarium.
Date published: 2014-11-08
Rated 5 out of 5 by from Very unique product I bought this light because of the low profile, natural lighting effects, ease of use, and my positive experiences with other Marineland products (filters, tanks, underwater lighting & bubble wands, heaters, etc.) I have bought good products from a few other companies, but I tend to gravitate toward Marineland products, as I know, from past experience, that I am getting top of the line products that last, perform well, have great features, and look great. I know that once I bring home a Marineland product, I'm not going to be disappointed. I know that the product is going to enhance the tank without taking the focus off the fish, not to mention ease of use. It's not bulky or heavy, and allows unobstructed view from the top of the tank for those who have glass tops. Plus, it makes it a lot easier to perform water changes and other maintenance to the tank, because you don't have to move a bulky light hood every time you need to gain access. I like that there are different options for mounting it- a deep groove to slide the inside lip (of the upper black tank rim) into and suction cups that allow it to be mounted to the tank glass. The light angle can be changed by turning the built-in knob at one end of the bar. The only thing that I would like to see in the future is an option to replace the light tube part. Other than that, this light is THE answer to eliminating extra bulk and creating a streamlined, elegant aquarium
Date published: 2014-05-31
  • y_2017, m_4, d_23, h_20
  • bvseo_bulk, prod_bvrr, vn_bulk_1.0.0-hotfix-1
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_30
  • loc_en_US, sid_NV33109, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_marineland

My hidden LED lighting system 17" is acting crazy. I turned it off last night and it would turn back on. Is it broken?

Asked by: tonyaleekent
I do not know of any way it could have turned itself back on. In regards to turning it, the knob may have been blocked or the light itself may not have been properly inserted. Without inspecting it, I don't know if you have broken it or not, but probably not. BREX
Answered by: BREX
Date published: 2017-04-20

Can these LED lights work on fresh water plants? I want to get the 10 gallon LED kit (colorwheel) and am not sure if the plants I put in for the fish will die... I definitely want live plants and this will be an entry tank until I can buy a bigger tank

Asked by: Ironrey
Yes, it is rated 6500K, which is what you need for live plants. BREX
Answered by: BREX
Date published: 2017-04-10

Can these be clipped to the center brace of a bowfront tank?

Asked by: cqpqc
They would probably fit on it, but you could damage the center brace, which would not be a good thing. They are intended only to fit on the frame of a tank. BREX
Answered by: BREX
Date published: 2017-04-01

I recently bought a new tank hood that included a string of LED lights that snap into the under side of the tank. They will only work intermittently. Most often when you turn the switch on the lights just flash very quickly. I need a replacement set.

Asked by: Bonny
Hi Bonny, We are sorry to hear this is happening! Please call us directly at 1-800-322-1266. We would be happy to help replace these LEDs for you. BREX
Answered by: BREX
Date published: 2017-02-06

I have the Marineland 21" led hidden strip light. I'm not sure how to work out the watts. I recently bought a 20 gallon tank with Tropical 'medium care' plants and they recommend 0.5 watts per gallon. Is this light going to cut it? Thanks

Asked by: Brigz
Wattage is only a measure of energy and does not tell you if you will be providing the right amount of light for your plants or not. You need Kelvin - 6500 K to be exact, for medium to high light plants. This light is 6500 Kelvin. As for wattage, it would be 16 watts, and 550 lumens. All of this information is on the product page under the tab, "Product Manuals and Instructions". Here is a link: http://www.marineland.com/Products/aquarium-lighting/LED-Aquarium-Lighting/freshwater-saltwater-reef-aquarium-led-lighting-system.aspx. BREX
Answered by: BREX
Date published: 2017-02-26

Marineland Hidden 21 LED Strip Light When the White Light Turns On It Flickers Like A Strobe Light I have 6 on my 225 and 2 of them do it already..

Asked by: Frank Matticola
We are sorry to hear this is happening, and will reach out to you directly. One thing you can do is make sure they are all plugged into a power strip with surge protection. You could be having a voltage issue, especially if there is a high usage of either heat or AC in your area at this time. BREX
Answered by: BREX
Date published: 2017-02-26

I have a 75 gallon tank. Sixty inches long 14 inch wide, do you have anything I could use

Asked by: Jeffrey D
Thank you for your interest in Marineland products! A 75 gallon is typically 48" long x 18" deep. The Hidden LED comes in two sizes: 17" and 21". If your tank is 60" long, we would recommend two of the 21" lights, and possibly an additional 17" one, depending on whether you wish these to be supplemental or the main source of light for your tank. BREX
Answered by: BREX
Date published: 2017-01-03

Can you custom the length of the lights?

Asked by: herby
Thank you for your interest in this tank. No, they cannot be cut or altered, customized in any way. BREX
Answered by: BREX
Date published: 2016-12-05
  • y_2017, m_4, d_24, h_2CST
  • bvseo_bulk, prod_bvqa, vn_bulk_1.0.0-hotfix-1
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_65
  • loc_en_US, sid_NV33109, prod, sort_[SortEntry(order=LAST_APPROVED_ANSWER_SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_marineland
Size .06 Watt White LEDs .06 Watt Blue LEDs Par/Lux at 12" PAR/LUX at 24" Lumens
17" 56 16 25/886 10/302 400
21" 72 16 25/1121 11/377 550


  • 6,500K white, 460nm blue LEDs
  • In-line 3 way switch
  • Energy-efficient .06watt LEDs
  • Fully sealed
  • Unique in frame mounting options
  • Integrated cord routing
  • Directional adjustment dial
  • 17,000 lifetime hours
  • Low voltage, single power source
  • Flexible mounting system
  • One-year performance warranty