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ITC Reefculture PARwise Light Meter
SKU: ITC-PARWISE
- The PARwise is a submersible light meter that measures PAR, spectrum, Kelvin, LUX, DLI, peak wavelength, and hue.
- Can operate in both underwater and in-air use.
- Connects to Windows, macOS, or Android devices to optimize aquarium lighting settings.
ITC Reefculture
UK-engineered reef innovation from light meters to pest control and coral farming tools
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FREE Shipping on orders over $75.00
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Closeout: new, unopened unit; available while supplies last
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Backed by a 90-Day Warranty
Make Informed Lighting Decisions with Professional Spectrum Analysis
The ITC Reefculture PARwise is a smart submersible quantum sensor that measures both light intensity (PAR) and complete spectrum data, empowering reef keepers and planted tank enthusiasts to optimize their lighting for maximum coral growth and plant health. Designed and manufactured in the United Kingdom, PARwise goes beyond basic PAR measurements to provide critical insights including Kelvin temperature, LUX, spectrum analysis, DLI (Daily Light Integral), peak wavelength, and hue color—everything you need to fine-tune your lighting settings and photoperiod. The proprietary optical engine with a replaceable cosine corrector delivers accurate underwater and in-air measurements, and connects via USB to Windows, macOS, or Android devices via an intuitive web-based app. Since the human eye can't accurately judge light levels or colors, PARwise provides the objective data required to achieve optimal growth rates through the right wavelengths, correct intensity, and precise timing.
Highlights:
- Measures PAR (PPFD), spectrum, Kelvin, LUX, DLI, peak wavelength, and hue color
- Submersible for underwater measurements plus in-air mode
- Proprietary UK-designed and manufactured optical engine
- User-replaceable cosine corrector for long-term accuracy
- Web-based app works on Windows, macOS, and Android
- Includes free USB-C adapter for smartphones and tablets
- Two light meters in one—underwater and in-air
- Spectrum analysis for informed lighting decisions
- Pause function to capture readings at specific positions
- Compare against spectral response curves
- Optimize brightness, color, and photoperiod
- Professional-grade measurements for coral and plant growth
- Requires Chrome Browser to access PARwise web-based app.
PARwise is ideal for:
- Reef aquarium keepers optimizing coral growth and coloration
- High-tech planted aquarium enthusiasts
- Understanding how light intensity changes with depth
- Comparing different lighting fixtures and settings
- SPS and LPS coral placement optimization
- Measuring light degradation over time
- Professional coral propagation operations
- Aquarium stores are testing lighting products
- Adjusting photoperiods based on actual light delivery (DLI)
- Fine-tuning spectrum for target organisms
- Android or computer users seeking professional light analysis
- Anyone making informed decisions about expensive lighting investments
Important Note: PARwise requires access to a Chrome-based browser. Therefore, iOS devices (iPads or iPhones) are not compatible with this light meter.
Technical Specifications:
| PAR Range | 0-6000 µMol/m2/s |
| Kelvin | 1000-10,000 Kelvin |
| LUX | 2-300000 |
| Spectrum | 380-800nm |
| Optical Measurement Type | Point Light Source |
| Accepted Light Sources | Natural, LED, Fluorescent, Incandescent, Gas Vapour, HID |
| Measurement repeatability | < 0.5% |
| Calibration Uncertainty | +- 5% |
| Directional cosine corrector | Replaceable |
| Temperature Response | Auto compensating |
| Ingress Protection Rating (IPR) | IP68 |
| Dimensions | 85x40x20mm |
| Device Weight | 130g |
WARRANTY
CoralVue, Inc. hereby guarantees this product to be free from defects in material and workmanship for a period of:
- 90-days
- Warranty is activated on the date of purchase.
This Standard Limited Warranty applies and is limited as follows:
- To the product only as long as it remains in the possession of the original purchaser.
- To the product that has not been subject to accident, misuse or abuse.
- To the product that has not been modified, altered, defaced, or had repairs made or attempted by other than CoralVue, Inc.
- That CoralVue be immediately notified in writing within ten (10) days of first knowledge of defect by owner or his agent.
- That CoralVue, Inc. shall be given first opportunity to make any repairs, replacements or corrections to the defective construction within a reasonable period of time.
- Under no circumstances shall CoralVue and/or the Manufacturer be liable by virtue of this warranty or otherwise for damage to any person or property whatsoever for any special, indirect, secondary or consequential damages of any nature however arising out of the use or inability to use because of the product defect.
How To Use:
- Follow the user instructions to get the PARwise device up and running.
- Place the sensor next to a photosynthetic organism such as a coral or plant, and then take a reading.
- Use the on-screen 'pause' button to capture the reading in that position and reference the spectrum against a known spectral response curve or another desired light setting.
Maintenance:
- Rinse sensor with fresh water after saltwater use
- Cosine corrector is user-replaceable if damaged or degraded
- Store in a protective case when not in use
- Keep USB connection clean and dry
Compatibility Requirements:
- Compatible: Windows computers, macOS computers, Android devices
- Not Compatible: iOS devices (iPhone/iPad) - Apple does not support USB OTG
- USB-C adapter included for Android smartphones and tablets