ITC PARwise Pro

PARwise allows you to make the right decisions about your lighting settings, be it brightness, color (spectrum) or photoperiod

Perfect growth rates require three things: the right wavelengths, the right light intensity, and both for the right time. Light changes with depth and clarity, as do the needs of plants and animals. Unfortunately, the human eye is not particularly good at understanding light conditions and colors. PARwise is an easy-to-use light meter that gives you a deep understanding of your lighting and helps you set it up perfectly.

• PARwise is a unique light meter with the ability to measure the spectrum. It can be used underwater and also has a special mode for measurements in the air. It gives you all the relevant lighting measurements needed to make informed decisions about your light settings and photoperiod.

• PARwise measures 'PAR' (PPFD – Photosynthetic Photon Flux Density μMol/m2/S, Kelvin (color temperature), LUX, Spectrum, DLI (Daily Light Integral), Peak Wavelength, Hue (as color)

• PARwise uses ITC's proprietary, in-house manufactured and designed optical engine, which sits beneath a user-replaceable cosine corrector, to evenly "read" the spectral content and amount of light hitting it. ITC then determines the results onboard in PARwise and sends this to your device via USB to display. The web-based app automatically downloads to your device (Windows, macOS, Android) the first time you use it to give you full offline use. Included is a free USB-C adapter for Android smartphones, tablets and modern computers (Mac/PC) that don't have a full-size USB port. Connects to most things, but unfortunately won't connect to an iOS device.

• Visit the PARwise website online for the first time in a Google Chrome-based web browser and simply place the sensor next to your photosynthetic organism such as a coral or plant to then take a reading. Use the pause button on the screen to capture the reading in that position, write it down and reference your spectrum to a known spectral response curve or other light settings you want to copy or adjust. Use DLI to adjust your day length up or down to get the same amount of light energy into the system in 24 hours. Examples can be found in the LEARN section of ITC's website.

• You only need to be online once to download the handy web app to your Chrome-based browser. No app installation or user account required.