Other industries are catching on too, and it’s estimated that over 87% of all light sources will be LEDs by 2030. Data from the Department of Energy data suggests LEDs prices have dropped by 90 percent since 2008.įor these reasons, LED lighting is becoming the most practical and energy-efficient lighting solution for indoor farmers globally. The cost of LED lighting solutions has been gradually decreasing for over a decade.LED lights naturally emit light over a 180-degree angle, reducing waste and the costs associated with redirecting and reflecting light from 360-degree bulbs.LED lights emit less heat than traditional HID lights, so they can be positioned closer to the canopy.Because LED lights emit both red & blue wavelengths, and every color of white in between, they are well suited to all stages of plant development.LED solutions can generate the entire spectrum of visible light colors without the need for filters.Modern LEDs last for upwards of 50,000 hours, equating to nearly six years of continuous use (the latest LEDs can last up to twice this long). LEDs have longer life spans than their traditional counterparts.LEDs are high quality and combine low maintenance costs with minimal hassle.The boost in LED efficiency and the associated rise in popularity of LED solutions comes down to a few key factors: This, in turn, leads to increased revenue and higher profit margins. The advancement of LED light technology makes it easier for growers to create perfect indoor farming environments and achieve greater crop yields on shorter growing cycles. We’ll dive into each of these considerations in more depth in the following sections. Seedlings and flowering plants will have different optimum proximities, for example. Plant Stage – The best lighting configurations take account of plant vitality throughout the various stages of development, so this needs to be factored into grow light distance.Wattage – High wattage lights typically need to be placed further away from plant canopies to avoid damage, whereas lower wattage lights can be moved closer.Traditional Lights – Different types vary in the heat energy they produce and the light spectrums they offer, meaning the optimum distance from the canopy is changeable. Now that you’re familiar with the terms for measuring light, we can look at some of the primary factors that affect grow light distances: Micromoles (μmol) – Micromoles are the unit used to quantify PPFD and are measured per square meter per second. As a result, the answer to the question ‘how close should grow lights be to plants?’ can have variable answers. Different locations on each canopy can have different PAR readings. Photosynthetic Photon Flux Density (PPFD) – PPFD measures the amount of PAR that reaches and is absorbed by your plants. Photosynthetic Photo Flux (PPF) – PPF is the total output of photons in the PAR range from the light. Specifically, PAR refers to visible light with wavelengths of 400-700 nanometers (nm). Photosynthetic Active Radiation (PAR) – PAR is not a measurement it’s simply a descriptor for the type of light needed to support photosynthesis in plants. These are the main technical terms you’ll come across: LED Grow Light Distance: Considerationsīefore we get started, it’s important to have a basic understanding of how to measure the light that reaches your plants. With that in mind, let’s take a look at some considerations for LED grow light height, and dive into recommendations for how you can achieve the maximum output levels for your crop using advanced LED lighting systems. Most modern-day indoor farmers are ditching outdated HID (high-intensity discharge), and fluorescent T5 grow lights in favor of LED (light-emitting diode) lighting. We’re afraid there’s no exact answer, as although grow light distance charts are readily available, the solution that’s right for you will ultimately depend on what type of lighting you use and which species you are growing. This leads us to one of our most frequently asked questions: how close should grow lights be to plants? Growers need to make sure their plants receive enough energy to develop at optimum rates without being overpowered. A well-designed lighting system is the most essential aspect of any indoor farming environment.
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