The Flat One Plus Pendant LED light designed and produced by ONF is a beautiful piece of equipment that will light up a standard-sized aquarium tank perfectly. Constructed from simple materials, ONF's full line of aquarium tank LED lighting solutions features sleek appearance along with powerful technology to illuminate your next planted aquarium tank project. The ONF Flat One Plus Pendant LED Light offers a slow ramp up and ramp down to mimic the rise and setting of the sun for your planted aquarium livestock. After testing the ONF Flat ONE Pendant LED Aquarium Lightfor more than a year, we are confident in its quality of build and lighting output.
Below are the two models offered for the ONF Flat One Plus LED Aquarium Light System. Both units are capable and suitable for growing aquarium plants.
Yellow & White Model (3000-6500K):
Enjoy a 20% increase in overall brightness. The Yellow/white model is perfect for emulating the natural hues provided by the sun. Great for a freshwater planted aquarium and produces a cozy, natural feel.
Blue & White Model (6500-20500K):
Enjoy a broader spectrum of lighting capability. The Blue/white model is perfect for use on both freshwater planted aquariums and saltwater aquarium tanks.
ONF Flat ONE BLUE WHITE Pedant LED Light on a rimless 44-gallon aquarium tank below:
Introducing a collaboration between aesthetics and engineering, the ONF Flat One Plus Pendant LED Aquarium Tank Lighting solution features a sleek 3mm-thin aluminum unibody that increases the cooling rate while prolonging the product's longevity. Standard across all of the ONF aquarium tank lighting solutions, ONF's Flat One Plus Pendant LED Light provides the optimal spectrum for lush aquatic plant growth and can be tailored to various species of aquatic plants and their respective light requirements. Color output is extremely vivid, allowing the myriad of hues produced by aquatic plants, freshwater fish and shrimp to shine bright and clear. ONF Flat One Plus Pendant is also suitable for any marine and reef hobbyists who are looking for a powerful lighting solution for a marine, coral and reef aquarium tank.
Like all of their aquarium tank lighting solutions, ONF Flat One Plus Pendant features touch control capabilities and offer many benefits and customization such as adjusting brightness levels and offering different modes. The ONF Flat One Plus Pendant Led Aquarium tank light also features Bluetooth capabilities and is compatible with ONF's app that allows the user to control multiple settings through its intuitive Apple iOS or Android OS app The app is very robust and many settings can be controlled remotely through the palm of one's hand. The smartphone app allows the user to control on and off timing, color balance, color rendition and brightness levels that are dependent upon aquatic plant choice within the planted aquarium tank.
Like all of their aquarium tank lighting solutions, ONF Flat One Plus features touch control capabilities and offer many benefits and customization such as adjusting brightness levels and color balance selection. The ONF Flat One Plus Led Aquarium tank light also features Bluetooth capabilities and is compatible with ONF's app that allows the user to control multiple settings AND multiple ONF Bluetooth-enabled LED lights through its Apple iOS or Android OS app. The app is very robust and many settings can be controlled remotely through the palm of one's hand. The smartphone app allows the user to control on and off timing, color rendition and brightness levels that are dependent upon aquatic plant choice within the planted aquarium tank. If the power goes out, the light will automatically restore itself to all its custom settings when powered back on within 24 hours. In addition, the light will ramp up and ramp down and will not abruptly turn on/off which means less shock to livestock.
Features and Specifications for ONF Flat One Pendant Led Light
LED Type: 120pcs (24") / 180pcs (36") Input Voltage: 100-240VAC, 50/60Hz (US power plug) LED Lifetime: 50,000hrs Dimmable: Yes (controllable through app and touch-sensitive buttons) Bluetooth App: Yes
NOTE: This is a pendant style aquarium LED light fixture and does not include an aquarium light hanging kit. For aquarium light suspension kits, check out the Ultum Nature Systems Light Hanging Kit or Light Hanging Bar.
No matter what type of aquarium you have—whether it's a planted tank, fish-only setup, or even a saltwater reef—every aquarist will eventually need a lighting fixture to illuminate the aquarium. In planted tanks, lighting plays a dual role: Aquascapers need it to monitor health and enjoy the view while aquarium plants require it to grow through photosynthesis.
All aquatic plants require light to grow. The duration and intensity of that light will vary depending on each individual species’ needs. In planted aquariums, “easy” plants are typically categorized this way because of their low lighting demands. Aquarium plants considered “high light” are often associated with more advanced setups, as stronger lighting is usually paired with higher nutrient levels and specific water parameters.
However, there’s plenty to consider! Aquatic plants like Anubias, Java Fern, Bucephalandra, Echinodorus, Cryptocoryne, Vallisneria, and various aquarium mosses can grow in low light conditions, but they can also thrive under high light. On the other hand, popular aquatic stem plants like Rotala, Ludwigia, and Alternanthera have higher lighting requirements and typically won’t grow well in low light environments.
Two versions of the same 24" ONF Flat One Pendant Lights over a 120P aquarium
A low light simple 2 gallon cube aquarium with a nano light
A 9 gallon aquarium with two light fixtures to grow much more demanding Rotala H'Ra
Aquarium LED Lighting Overview
All aquatic plants require light to grow. The duration and intensity of that light will vary depending on each individual species’ needs. In planted aquariums, “easy” plants are typically categorized this way because of their low lighting demands. Aquarium plants considered “high light” are often associated with more advanced setups, as stronger lighting is usually paired with higher nutrient levels and specific water parameters.
However, there’s plenty to consider! Aquatic plants like Anubias, Java Fern, Bucephalandra, Echinodorus, Cryptocoryne, Vallisneria, and various aquarium mosses can grow in low light conditions, but they can also thrive under high light. On the other hand, popular aquatic stem plants like Rotala, Ludwigia, and Alternanthera have higher lighting requirements and typically won’t grow well in low light environments.
Lighting
Nutrients
CO2
LOW
LOW
Provided solely by nutrient-rich aquasoil or root tabs
Not required
Plants may rely on natural CO2 produced by livestock or via a simple CO2 kit
MODERATE
MODERATE
Use about half of the recommended liquid fertilizer dose. Aquarium plant soil is highly recommended.
Recommended
CO2 should be used, but can be introduced slowly and adjusted based on plant growth. Use a drop checker to monitor levels.
HIGH
HIGH
Full liquid plant fertilizer dosage is needed. Aquarium plant soil is required.
Required
Providing it from the start and dialing in proper levels will help prevent algae from appearing.
Aquarium lighting that is too intense or kept running for too long can result in algae problems! The light fixture you choose has to match the plants you’re growing. Here’s an easy guide to help shed some light on lighting in a planted aquarium:
All aquatic plants require light to grow. The duration and intensity of that light will vary depending on each individual species’ needs. In planted aquariums, “easy” plants are typically categorized this way because of their low lighting demands. Aquarium plants considered “high light” are often associated with more advanced setups, as stronger lighting is usually paired with higher nutrient levels and specific water parameters.
Aquascaper’s Tip: Almost all Glass Aqua planted tanks are high light demanding setups. However, we start off with moderate levels and slowly build the intensity as the plants grow week to week.
So many lights, so many model numbers—how do I even choose?
We were super confused when we first started the hobby too. BUT! It’s actually really simple: think of it as a numbers-matching game. Brands like Chihiros and Twinstar use model numbers like Twinstar 600E or Chihiros WRGB II PRO 60. All you need to do is match that number with your rimless aquarium’s model—or one that’s close to it. (Most lights come with adjustable legs now, so there’s some flexibility!) For example, both of the lights above pair perfectly with the Ultum Nature Systems 60U, a standard 60CM rimless tank. The same logic applies to larger tanks. A UNS 120U, which is double the width, would need two Twinstar 600E’s or two WRGB II PRO 60s.
The "60" in the light model refers to the aquarium’s width in centimeters—and 60cm is roughly 24”. So, a 60U would also be compatible with a 24” ONF Flat One LED light. Using that same logic, a 120U rimless aquarium (120cm wide) would need two 24” ONF Flat One lights. (120cm ≈ 48 inches!) Some brands also offer dedicated 120 light models—so in that case, you'd only needone fixture. But we thought this example would make it easier to understand. Easy numbers, easy math, easy lighting choices now, right?
Twinstar 200C on an Ultum Nature Systems 20C cube aquarium
Twinstar 450E on an Ultum Nature Systems 45T tall aquarium
Two 24" (60CM) ONF Flat One Pendant Lights on an ADA 120P standard aquarium
Depending on the brand, this will vary. Twinstar primarily uses letter-based model names (A, B, C, E, EA, S). In general, the earlier the letter is in the alphabet, the lower intensity max brightness of the light will be. For example, the Twinstar A series is recommended for low light plants while the S series is designed for maximum brightness output.
Chihiros utilizes a similar lettering system - with the exception of the RGB Vivid or WRGB lines. RGB Vivid lights offer max lighting for planted aquariums and is their flagship model, whereas WRGB models are less intense but with the same premium build quality.
Some lights such as the Ultum Nature Systems Titan 1 are pendant style which means the light will require some form of suspension via an aquarium light hanging kit. We love hanging kits as they lift the light up and out of the way for a better viewing and maintenance experience.
The same UNS 60S Shallow Rimless Aquarium with a Twinstar 600EA and later upgraded to a UNS Titan 1 pendant light to make maintenance easier and viewing the tank better
Now that you have lighting down, be sure to check out the nano aquarium light options as well because these brands also produce cuter and smaller versions of their main lights to suit desktop and nano aquariums too!
Bluetooth controllable ONF Flat Nano+ over a UNS 5T 6.9 gallon aquarium
ONF Mist-O Plant Light with magnetic mount over a UNS 16C 1 gallon aquarium
Twinstar 360E over a UNS 5N (36CM width) 4.6 gallon nano aquarium
Shipping Orders are typically processed within 1-2 business days M-F. However, additional time may be required during peak seasons and federal holidays. For orders containing live plants, we exercise extra caution and assess factors such as travel distance and weather to ensure safe transit.
To avoid delays, please ensure all order information is accurate and complete. We cannot offer refunds and are not responsible for orders shipped to incorrect addresses due to errors in provided information. Once an order has been shipped, delivery times are determined by the carrier and are outside of our control. On average, shipments arrive within 2–5 business days, excluding weekends and holidays. For more information, please visit our FAQ page.
Returns If you are not satisfied with your purchase, please contact us within 48 hours of delivery. Approved returns must be shipped back within 14 days of approval. Returned items must be unused, unopened, and in their original packaging. Specific return requirements, if applicable, will be listed on the product’s page. For more information, please visit our FAQ page.
Refunds No worries, we’ll take care of everything as long as it fits the guidelines above.Most answers to general questions can be found on our FAQ page.
