Proper Distance to Hang Your Grow Light

Mar 16

Keeping the proper distance between your LED grow lights and your plants is important to robust photosynthesis and growth.  Your LED grow light provides the wavelengths of light your plants need for growth and flowering. G8LED grow lights are formulated to the photosynthetic activation radiation (PAR) wavelengths necessary for plant growth.  Plants will reach for the much coveted light source just like they grow towards the sun in outdoor conditions.  The general rule of thumb is to increase the distance between the top of the plants’ canopy and the light source as the light becomes more intense. This means that hydroponic LED grow lights of different power ratings will perform best at different distances.

The G8-240 should be hung 20-24 inches from the top of the canopy. The G8-450 should be hung at 24-30 inches from the top of the canopy. The G8-600 should be hung at 30-36 inches from the top of the canopy and the G8-900 should be hung 30-42 inches from the top of the canopy of your plants. Maintain these distances as your plants grow in the vegetative stage. For plant stretching increase the distance from the the plants to the light. For shorter, bushier plants decrease the distance. As you raise the light, the plants will reach for the source and grow taller. If you keep the light fixed, the plants will grow tall to a certain point, then grow wider and more dense. Putting lights too close to the plants may be too intense and stunt growth and create discoloration. It is best to follow the recommended distances and adjust as necessary. Once you start to flower you do not have to keep moving the lights up to avoid stretching.

 grow lights for indoor plants

G8240 Light hanging 20 inches above tomato plants

Since LED grow lights emit 90% less heat than traditional HID lighting such as high pressure sodium or metal halide bulbs, your plants will not dry out or burn if you happen to place your LED grow light to close to your plants. However, your plants’ growth will be stunted if the light is hanging too low. Within a week you will notice that your plants are not experiencing robust growth and the leaves may become discolored. If you do experience this result, adjust by increasing the distance between your light and the plants. Remember, the stronger the light, the further away you should hang it from your plants. Follow the recommended hanging distances and your plants will thrive in your grow room.