Daily Light Integral (DLI)

What is daily light integral?

Daily Light Integral (DLI) is the amount of light particles, or photosynthetically active radiation (PAR), received by an area in one day. DLI will affect your plant growth and development. It is something you should consider when growing your own crops, especially when using grow lights (or a greenhouse setting). This will ensure that whatever crops you are growing aren’t getting to little, or to much, light. To measure the DIL in your area you will need a horticulture light meter. This will allow you to log light readings over a 24 hour time frame. You can then adjust the light accordingly. Below is a DLI calculator to use.

DLI Calculator

Number of Lights1PCS   
192 LED Option99.49umol/sec5mols/day
 139.60hrs to equal mols/day   
Number of Lights1PCS   
336 LED Option198.976umol/sec5mols/day
 69.80hrs to equal mols/day   
Number of Lights1PCS   
432 LED Option298.46umol/sec5mols/day
 46.53hrs to equal mols/day