Chihiros WRGB II LED Review: High-Output Planted Light
The Chihiros WRGB II became the de facto reference light for Singapore planted-tank builders the moment it dropped to under SGD 250 at C328 around 2021, and four years later it still sits on more competition entries than any other fixture we audit. This chihiros wrgb ii led review from Gensou Aquascaping at 5 Everton Park is built from data we have logged across roughly forty client builds, so the numbers are field figures rather than press-release specs. Expect honest notes on PAR readings under PUB tap, app quirks during monsoon brownouts, and where the fixture starts to struggle.
What You Are Actually Buying
The WRGB II is a slim aluminium bar fitted with white, red, green and blue chips, controlled over Bluetooth via the Chihiros App. Mounting hardware ships in the box in two flavours: low-profile rimless brackets that clip onto 5 mm to 12 mm glass, and a pair of bent legs for older rimmed tanks. The 60 cm version draws around 75 W at full output, the 90 cm closer to 110 W, and the 45 cm hovers near 50 W. Build quality is genuinely good; the anodised housing has not pitted on any unit we have serviced beyond the three-year mark.
PAR Numbers Under Real Conditions
Under a 60 cm tank at 36 cm water depth, we measured 130 to 150 PAR at the substrate at 100 percent output, dropping to about 70 PAR with a 40 percent dim. That is solidly high-light territory and enough to push HC Cuba and Rotala rotundifolia into compact, red growth without leaning on extreme CO2. Most planted scapes in Singapore homes do not need full output; we run client tanks at 60 to 75 percent and use the remaining headroom for ramped midday peaks.
Spectrum and Plant Response
The four-channel mix lets you bias warm or cool, and the stock “RGB” preset hits roughly 6500 K with a small red push that flatters reds without tipping cyanobacteria into bloom. We tend to bring the green channel down by about 15 percent for richer reds on Ludwigia and Alternanthera. Buce keepers running tanks under our bucephalandra-only scape guide can drop intensity to 35 percent and still hold tight, deep colour without algae creep.
App Control and the Brownout Problem
The Chihiros App handles ramped sunrise, midday burst and dusk via a timeline editor that is functional rather than elegant. The catch in Singapore is monsoon brownouts; the controller stores its schedule in firmware, but a brief power cut occasionally desynchronises the internal clock, leaving the light on at 3 am the next morning. A small UPS or even a $40 surge-protected timer plug solves this. Our aquarium during monsoon Singapore guide has the full power-protection rundown.
Heat Output and Tank Temperature
At full output a WRGB II 60 cm raises ambient water temperature by roughly 0.5 to 0.8 degrees in a 60 litre tank when ambient hits 30 degrees. That matters in Singapore because many flats sit at 29 degrees during the day and the light is the one variable you can quickly modulate. If you run the fixture suspended 10 cm above the rim rather than mounted on it, surface heating drops noticeably and gas exchange improves.
Coverage and Tank Geometry
Light spread is approximately 120 degrees, giving even coverage across a 45 cm wide tank but losing intensity at the corners of standard 60 cm by 30 cm footprints. For ADA-style 60 P (60 by 30 by 36) the single 60 cm bar is adequate; for 60 cm by 45 cm rimless, you either accept dimmer flanks or run two 45 cm fixtures side by side. We have done both and the twin-45 setup gives more design flexibility once you start mounting lily pipes.
Comparison Within the Chihiros Range
WRGB II sits above the basic A Series and below the WRGB II Pro and Vivid II in the planted lineup. Against the Pro, the standard II loses about 20 percent peak PAR and one tier of build polish, but saves roughly SGD 100. For 90 percent of HDB-scale builds the standard II is the sensible choice. Our Chihiros vs Twinstar LED comparison piece covers the cross-brand decisions.
SGD Pricing and Where to Buy
Expect $230 to $260 for the 60 cm at C328 Clementi, $310 to $360 for the 90 cm, and $170 to $200 for the 45 cm. Polyart and Green Chapter occasionally undercut by $20 to $30. Carousell carries used units regularly between $130 and $180; check the dimming response at the seller before paying since worn driver caps cause flicker at low percentages. Avoid grey-market stock from non-authorised Shopee listings; warranty claims through Chihiros SG go through Y618 and Polyart.
What It Does Not Do Well
For very high-tech red Dutch scapes pushing 200 PAR and 40 ppm CO2, the WRGB II runs out of headroom; you want WRGB II Pro or twin units. It also does not produce a true cinematic shimmer over deep reef-style geometry, and the colour rendering on yellow corals is acceptable rather than excellent. As a freshwater planted fixture, though, it remains the volume sweet spot in the local market.
Three-Year Reliability Notes
Across the client tanks we maintain, we have replaced one driver in three years and seen no chip failures. The Bluetooth pairing process has improved through firmware updates, though older Android devices still occasionally need a re-pair after the WRGB II loses power. A quick reset using the on-fixture button restores the schedule from the app within a minute.
Verdict and Buying Recommendation
For a 45 cm to 90 cm planted tank in a Singapore HDB or condo, the Chihiros WRGB II remains the recommendation we give nine times out of ten. The combination of useful PAR, app control, decent spectrum quality and SGD pricing under most direct alternatives is hard to argue with. Pair it with a programmable timer or UPS, and you have a fixture that quietly does its job for three to five years before any service questions arise.
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emilynakatani
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