Lighting defines the success of every planted aquarium.
The Chihiros WRGB2 family is known for its accuracy, color brilliance, and smart control — trusted by aquascapers worldwide.
But which model fits your needs — WRGB2, WRGB2 Pro, or B Series?
Let’s break it down simply, so you can make the right choice for your aquascape.
Which light type fits your tank?
Choose for plant needs and the look you enjoy. RGB mixes red, green and blue; WRGB adds white LEDs; white-light fixtures use white LEDs, sometimes with additional colors. Product names alone do not confirm the LED layout or controls.
| Your priority | RGB | WRGB | White light |
|---|---|---|---|
| Plant growth | Can support demanding plants with enough output. | Can support demanding plants; extra white is not a growth guarantee. | Can grow plants well; match output to plant demands. |
| Shrimp appearance | Can emphasize reds and blues; strong settings may look exaggerated. | Can balance vivid colors with a whiter overall look. | Often a neutral-looking starting point; appearance depends on spectrum. |
| Color control | Adjustable color balance if channels are independently controlled. | Separate white adjustment only if the fixture supports it. | Often brightness-only; check for adjustable color temperature. |
| Tank size | Any type can suit small or large tanks. Check fixture length, spread and PAR at substrate depth, not just watts or the spectrum label. | ||
| App needs | An app is a fixture feature, not a light-type requirement. Check controller inclusion, phone compatibility, dimming and scheduling before buying. | ||
| Choose your fit | Choose RGB for a vivid, adjustable look, where channel control is available. | Choose WRGB for color tuning plus white, where separately controllable. | Choose white light for a straightforward display, with output suited to your plants. |
Color rendering is how plants and shrimp look to you, not a measure of growth. Balance light intensity and duration with CO₂ and nutrients; more light is not automatically better.
Spectrum and Power Output
All Chihiros WRGB models offer a true WRGB spectrum (White, Red, Green, Blue) that reveals natural colors and enhances plant pigments.
📱 Smart Control and Design
Each light connects to the Chihiros App, where you can fine-tune brightness, color temperature, and timing.
This allows a natural sunrise/sunset effect that reduces stress for fish and promotes steady plant growth.
When paired with balanced fertilization from 2HR Aquarist, it creates the perfect light-nutrient synergy.
🌿 Light + Nutrition: The Perfect Combo
Even the best lighting can’t do its job without the right nutrients.
That’s where 2HR Aquarist APT fertilizers come in — designed to match the light intensity and CO₂ levels in your setup:
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APT 1 – for low-tech tanks under B Series lights
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APT 3 – for medium/high-tech tanks with WRGB2 or WRGB2 Pro
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APT Sky – for strong light, dense planting, and vivid red coloration
🏆 Our Recommendation
If you’re looking for:
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Maximum performance: WRGB2 Pro
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Balanced choice: WRGB2
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Compact nano elegance: B Series
And for truly balanced plant growth — combine your Chihiros light with the right APT fertilizer for light intensity.
🛒 Related products
👉 Explore all Chihiros Lights
👉 Discover 2HR Aquarist Fertilizers