Chihiros WRGB II Slim - Aquarium Light

Chihiros LED Light - WRGB II Slim - Glass Aqua

Chihiros WRGB II Slim LED Aquarium Light

$174.99 USD

Usually ships in 1-2 business days from our fulfillment center

IMPORTANT: If your order arrives damaged, please take photos and contact us right away—we’re here to help. Due to the nature of certain products, returns are subject to approval. For full details, please visit our FAQ.

The Chihiros WRGB II Slim LED Aquarium Light is a high-performance lighting solution for planted aquariums and aquascaping. Featuring a full RGB spectrum, it brings out the natural tones of aquatic plants and tropical livestock while supporting a wide range of aquascaping styles.

Its ultra-slim profile measures under an inch thick, allowing the WRGB II Slim to blend seamlessly into modern aquarium setups, while delivering essential light for plant growth without distraction. Built-in Bluetooth connectivity allows for easy customization through the MyChihiros app, giving you full control over brightness, color balance, timers and lighting effects without the need for extra equipment.

Looking for a Complete Setup? Pair the WRGB II Slim with a matching shade or hanging kit to create a custom lighting solution for your planted aquarium. Shop WRGB II Slim Light Kits

Chihiros WRGB II Slim aquarium light above aquatic plants

Product Highlights
- Full RGB Spectrum
- App-Controlled Lighting
- Customization and Slim Design

The WRGB II Slim is designed for planted aquariums that range from low to high demand. With full personalization, it is capable of supporting everything from simple layouts to more advanced aquascapes with demanding species, carpeting plants and dense growth.

Model Specifications


Model	Dimensions (IN) W x D x H	Lumens	Power (WATTS)	LED Bulbs
Slim 30	11.18 x 5.04 x 0.59	1200	23	20
Slim 45	17.09 x 5.04 x 0.59	1800	35	30
Slim 60	23 x 5.04 x 0.59	2400	45	40
Slim 90	34.8 x 5.04 x 0.59	3600	69	60
Slim 120	46.61 x 5.04 x 0.59	4800	90	80

Chihiros Aquatic Studio is a well-known brand for aquascaping and planted aquarium goods. Explore thoughtfully designed aquarium essentials—easy to use and dependable for every hobbyist.

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Shedding Some Light on Planted Aquarium Lighting

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.

ONF Flat One Light on ADA 120P Planted Aquarium Tank

Two versions of the same 24" ONF Flat One Pendant Lights over a 120P aquarium

Beginner betta fish nano planted aquarium tank

A low light simple 2 gallon cube aquarium with a nano light

Iwagumi planted nature aquarium tank with stem plants

A 9 gallon aquarium with two light fixtures to grow much more demanding Rotala H'Ra

Aquarium LED Lighting Overview


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.

Glass Aqua Planted Aquarium Tank CO2 Injection Guide

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 need one fixture. But we thought this example would make it easier to understand. Easy numbers, easy math, easy lighting choices now, right?

Beginner shrimp nano planted aquarium tank

Twinstar 200C on an Ultum Nature Systems 20C cube aquarium

Twinstar planted aquarium tank dutch style

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.

Ultum Nature Systems UNS 60S Shallow planted rimless aquarium tank iwagumi with lava rock

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!

Ultum Nature Systems UNS 5T tall nano planted rimless aquarium tank iwagumi with Hakkai Stone

Bluetooth controllable ONF Flat Nano+ over a UNS 5T 6.9 gallon aquarium

Ultum Nature Systems UNS 16C cube nano planted rimless aquarium tank terrarium style

ONF Mist-O Plant Light with magnetic mount over a UNS 16C 1 gallon aquarium

Ultum Nature Systems UNS 5N nano planted rimless aquarium tank nature aquarium style

Twinstar 360E over a UNS 5N (36CM width) 4.6 gallon nano aquarium

Shop Aquarium Lighting

Overall rating: 4.9444447 / 5 from 18 reviews.

AI Generated Review Summary

Summary topics

Review topics: ["light"].

Review highlights

Reviews

My first RGB light

"I bought this light as my first foray into the RGB series from Chihiros. Previously I had bought the C2 and two B30’s. I have to say the workmanship of the WRGB Chihiros Slim 30 is very high quality anodized metal. Green Aqua sent the light by prompt delivery and arrived well packaged minus any packing so a corner of the box inside was smushed but I don’t really feel like that’s something to overly complain about. The main reason I feel it needs to be addressed is that the cabling that comes off the light has a notch for the light but instead of some way to thread it into the riser it hangs down. To resolve this I used one of the twisty ties that came with the kit and with some working it fit flush with the notch in the riser. Over all my experience with Green Aqua has been positive and I have had a positive experience with the store interface and the high quality of selection they offer. I am glad they are here and thus far I am enjoying the new light."

— Allison S. (4/5)

Incredible Color Rendering

"For the first year of my 6. 5g Neocaridina tank, I used a Fluval nano 3. 0. I thought I had a great light, never any major complaints. But when compared to my new Chihiros WRGB2 Slim, the Fluval was severely lacking in both intensity and color rendering. When I first plugged in the Chihiros, I was quite literally shocked at the difference! Cannot recommend a better light for a high-tech nano tank!"

— Bobby B. (5/5)

Best lighting I ever owned.

"Best lighting I ever owned. Fish and plants look amazing under this light"

— Yeremi G. (5/5)

Excellent top quality light

"Excellent light with lots of features. Top quality light that is well made and looks great. As a plus the Chihiros app is a great way to keep track of your tank from setting it up to water quality over time."

— Christopher G. (5/5)

Great light for leveling up

"Adjustable and app controlled light perfect for upgrading my tank from Low tech"

— JOSEPH V. (5/5)

Great Light

"Amazing light. Great option for setting light ramping to make it feel more natural for livestock. Super easy to adjust and the color pop really well!"

— Khiem L. (5/5)

Works well! Super powerful

"Works well! Super powerful"

— Jayln R. (5/5)

Seems to work well.

"High quality light, looks great."

— Nathan S. (5/5)

Great Light! Awesome adjustability. Well

"Great Light! Awesome adjustability. Well built"

— Ian T. (5/5)

Great High quality light

"Excellent high quality light - love the design."

— Bruce B. (5/5)

Q&A

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.