Chihiros WRGB2 Pro 45cm (56W) LED Light - Advanced Planted Tank Lighting

Chihiros WRGB2 Pro 45cm (56W) LED Light

The WRGB2 Pro 45cm is a high-output full-spectrum LED light built for planted aquariums in the 45–60 cm range, part of Chihiros' flagship Pro line aimed at aquascapers who want serious PAR output rather than a basic light-up-the-tank fixture.

What Makes It Different

The Pro series combines White, Red, Green, and Blue LED channels independently controllable through the My Chihiros app, letting you dial in everything from a lush green growth-focused spectrum to a warmer, more dramatic display look. At 56W and roughly 42–49% higher PAR output than the standard WRGB2 line (consistent with the rest of the Pro series), it's built for demanding, fast-growing planted setups — including red plants that need strong light to develop their color.

Key Benefits

• Independent RGB + White channel control via the My Chihiros app
• High PAR output suited to CO₂-injected, high-tech planted tanks
• Custom sunrise/sunset and spectrum scheduling
• Compatible with Chihiros mounting brackets for rimless tanks
• Bluetooth control, expandable to Wi-Fi with the optional Hub

Who Should Use This

• Aquascapers running CO₂-injected tanks in the 45–60 cm range who need strong PAR for demanding plants
• Anyone upgrading from a basic light and hitting a growth or coloration ceiling
• Aquarists who want full control over spectrum and photoperiod through an app rather than a physical dial

For lower-tech tanks without CO₂ or with less demanding plants, the standard WRGB2 or Slim line uses less energy and avoids overpowering a tank that doesn't need this much light.

Expert Tip

High PAR output means algae risk rises if your CO₂ and fertilization aren't keeping pace — don't run this light at full intensity from day one on a new setup. Start at a lower percentage and increase gradually as your CO₂ and nutrient dosing stabilize.

Frequently Asked Questions

What tank size is this suited for?

Aquariums roughly 45–60 cm wide.

Do I need CO₂ to use this light?

Not strictly, but its high PAR output is best matched with CO₂ injection to avoid algae issues from excess light without enough carbon.

How is it controlled?

Via Bluetooth through the My Chihiros app, with optional Wi-Fi control using the Chihiros Hub.

Pairs Well With

• Chihiros Doctor 5 – for algae control if light intensity outpaces your dosing
• APT 3 – complete fertilization to match the plant growth this light supports