To achieve noticeable results with plant grow lights, besides choosing a suitable and reliable manufacturer, proper usage is crucial. The distance between the grow light and the crop needs consideration, as does the compatibility of the light spectrum with the crop and the appropriate wattage. The duration of use depends on the specific crop condition and weather conditions.

Plant grow lights supplement light to crops when sunlight is insufficient. On sunny days with ample sunlight, continuous use is unnecessary. During the day, with sufficient sunlight, 2-3 hours of supplemental lighting in the morning or evening is sufficient. For sun-loving crops, prolonged periods of insufficient sunlight due to cloudy, rainy, snowy, or foggy weather require longer use of grow lights, and the duration can be extended at night. A timer can also be used for control, saving manpower.

Plant grow lights should not be used for 10+ hours daily, a few hours at night, or 24/7. This will actually reduce the effectiveness for the crops. The correct method is to turn them on during the day and turn them off in the evening. Plants also need rest. They need to be properly arranged.