Achieve Accurate Light Settings with the PARwise Aquarium Light Meter

Smart Submersible Quantum (PAR) Sensor

PARwise helps answer the question of how to set your aquarium lights, whether it involves brightness, color (spectrum), or photoperiod. PARwise empowers reef keepers to make informed decisions about their lighting settings. Achieving optimal growth rates requires three key factors: the right wavelengths, the correct light intensity, and precise timing. Light varies with depth and water clarity, as do the needs of plants and animals. Unfortunately, the human eye isn't very good at judging light levels and colors! PARwise offers a user-friendly light meter that provides a clear understanding of your lighting and how to fine-tune it for optimal results, proudly designed and manufactured in the United Kingdom.

Important Note: PARwise requires an Android device or a computer to operate. It is currently not compatible with iOS or iPadOS because Apple devices do not support USB OTG.

PARwise Measures:

PARwise measures ‘PAR’ (PPFD – Photosynthetic Photon Flux Density µMol/m2/S)
Kelvin (Color temperature)
LUX
Spectrum
DLI (Daily Light Integral
Peak Wavelength
Hue Color

How It Works

PARwise uses a proprietary, in-house made, and designed optical engine nestled underneath a user-replaceable cosine corrector to evenly ‘read’ the spectral content and quantity of light that hits it. PARwise sends the data over USB to the connected device to display the results. The web-based app automatically downloads to the device (Windows, macOS, Android) the first time it is used. Included in the box is a free USB-C adaptor to fit into Android smartphones, tablets, or computers (if needed).

How To Use

Follow the user instructions to get the PARwise device up and running – then 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.

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: IP68

Dimensions: 85x40x20mm

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