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Our guides help you to get the most out of our app — and ultimately: your plants.

How to Measure Accurately

How to Measure Accurately

Learn what affects the accuracy of the Photone Grow Light Meter

Which Light Source to Choose

Which Light Source to Choose

Selecting the right light source setting is crucial for accurate PAR measurement

Medical Cannabis Lighting Guide

Medical Cannabis Lighting Guide

Recommended PAR and DLI levels for your medical cannabis plants

Medical Cannabis Lighting Guide
Pro

Medical Cannabis Lighting Guide

Recommended PAR and DLI levels for your medical cannabis plants

Houseplant Lighting Guide

Houseplant Lighting Guide

Recommended DLI levels and lighting for your houseplants

Houseplant Lighting Guide
Pro

Houseplant Lighting Guide

Recommended DLI levels and lighting for your houseplants

Coral Reef Lighting Guide
Pro

Coral Reef Lighting Guide

Recommended photoperiod and PAR levels for your corals

How To Measure Underwater
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How To Measure Underwater

Step-by-step instructions to use Photone underwater

How To Calibrate Photone

How To Calibrate Photone

Short explanations to properly calibrate your device, if needed

Pro Settings Explained

Pro Settings Explained

Learn more about our Pro Settings and how to use them

plant lighting calculator
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Plant Light Calculator

Learn how much light your plant needs

More on Our Blog

Our blog features more interesting articles about light measurement and plant lighting

PPFD, PAR, Foot-candle or Lux: What Is the Difference?

PPFD, PAR, Foot-candle or Lux: What Is the Difference?

Both PPFD and Lux are units used to measure the intensity of light. Whereas Lux is universally used to measure and compare the brightness of visible light, PPFD is referring to the amount of light suitable for active photosynthesis of plants.

The Daily Light Integral of Plants

The Daily Light Integral of Plants

The daily light integral (DLI) specifies the usable light received within a 24 hour window. Understanding and optimizing DLI is crucial for healthy plants and bountiful plant yield.

Grow Light Metrics: What It All Means

Grow Light Metrics: What It All Means

You probably already stumbled across some common grow light metrics and abbreviations. This article provides a glossary and simple explanations of all relevant terms.

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