As we all know, light source plays a very important role in the process of planting. When you optimize your light levels specifically for the type of crop or the stage of growth. Your plants will flower faster, have better root development and plant structure, and will yield greatly.

When choosing a lighting source, you’d better evaluate two important factors below： light intensity and spectrum. Optimizing for these two factors can help you improve the quality and yield of your plants, as well as shorten your growth cycle and maximize profits.

For cannabis cultivation, if you want to increase yields in a short period of time, the fastest way is to increase light intensity, because light intensity is directly related to yield. Before increasing light intensity, you need to know the light saturation point of different plants and increase it accordingly, otherwise too much light can damage your plants. But for cannabis plants, it's a crop that can withstand a lot of light intensity, and as a rule of thumb when you increase your PPFD up to 1400umol/m2/s your yield will also go up. It is easy to say, but is never the same, if you want to maximize your yield, you have to supply other things like co2, temperature, and nutrients to ensure a balanced growing environment for the best yield.

Is the spectrum important for yield stimulation? The answer is yes, but compared to PPFD, the effect of PPFD is greater than that of the spectrum, which has little effect on increasing yield. The main driving factor for increasing output is light intensity. From the point of view of economic benefit, we should pay more attention to $/PPFD rather than $/W, and it is not advisable to increase power cost to increase output.