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  • PARwise is the ultimate light meter!


  • Measuring PAR, K, LUX, SPECTRUM, DLI and more


  • Set your lights up correctly and maximise growth, health and colour


PARwise is our latest tool which ends the questions of what setting should my lights be on, whetherthat be brightness, colour (spectrum) or photoperiod. PARwise empowers you to make the right decisions over your lighting settings and to share and discuss lighting in great depth with the reefing community, with accuracy–whether your organism is aquatic or not!

Perfect growth rates need three things: The correct wavelengths, the correct intensity of light andboth of these for the correct amount of time.

Light changes with depth and clarity so too does therequirements of plants and animals.Unfortunately, the human eye is not particularly good at understanding light levels and colours!

PARwise provides you with a simple to use light meter which will give you a deep understanding of your lighting and how to tune it to perfection.

Works on Android mobile devices with USB OTG, PC, MAC but sadly not iPhone or iPad yet! – Google Chrome browswer required (free).

Phone not included!


PAR Range0-6000 µMol/m2/s
Kelvin1000-10,000 Kelvin
Optical Measurement TypePoint light source
Accepted light sourcesNatural, LED, Fluorescent, Incandescent, Gas Vapour, HID
Measurement repeatability< 0.5%
Calibration Uncertainty+- 5%
Directional cosine correctorReplaceable
Temperature responseAuto compensating
Ingress Protection RatingIP68
Device Weight130g
Outer Package Dimensions24.5x 15.5×5.5 cm
Packaged Weight215g
Factory re-calibratable

Additional information

Weight2 kg


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