Understanding PAR and its Importance in Indoor Gardening
Photosynthetically Active Radiation (PAR) is the spectral range of light that plants use for photosynthesis. The PAR spectrum is between 400 and 700nm, and it is the most important for plant growth. The intensity of PAR is measured in micromoles per square meter per second (μmol/m²/s). This measurement is essential to determine the quality of LED grow lights suitable for indoor gardening.
PAR is crucial in indoor gardening because plants rely entirely on artificial light sources, unlike outdoor farming where sunlight is readily available. The intensity and quality of PAR emitted by grow lights determine the success of indoor gardening. Therefore, it is essential to invest in the appropriate equipment to ensure optimal plant growth, health and yield.
Misconceptions about PAR Meters
One of the biggest misconceptions about PAR meters is that they are only relevant to commercial growers. However, anyone who grows plants indoors, from hobbyists to professional gardeners, can benefit from using a PAR meter.
Another common misconception is that all PAR meters are the same. While they may share the same concept of measuring PAR, there are significant differences in their accuracy, range, and quality. Therefore, it is essential to understand the specifications of different PAR meters and how they align with your indoor gardening needs.
Factors to Consider when Choosing a PAR Meter
When selecting a PAR meter, there are essential factors to consider, including accuracy, range, and price. Here is a breakdown of these factors:
Accuracy
PAR meters vary in accuracy, and the most accurate models are relatively expensive. However, if you are a commercial grower, the high cost is justifiable. For hobbyists, a less expensive model may suffice.
Range
The range of a PAR meter refers to the spectrum of light wavelengths that it can measure. A broader range of wavelengths is better since it can measure a wider range of light sources. However, it is essential to note that the most crucial range is between 400 and 700nm, which is the PAR spectrum.
Price
The cost of a PAR meter should align with your indoor gardening needs. The most expensive model may not be the best option for hobbyists, while the cheapest model may not be the most accurate for commercial growers.
Top PAR Meters for LED Grow Lights in 2021
After extensive research, the following are the top PAR meters for LED grow lights in 2021:
1. Apogee MQ-500 Quantum PAR Meter
The Apogee MQ-500 Quantum PAR Meter is a widely recognized and established brand in the indoor gardening industry. It is highly accurate and has a broad range of 389 to 692nm, making it suitable for measuring different light sources. It has a reasonably high price point of around $700, making it best for commercial growers.
2. LiCOR LI-250A Light Meter
The LiCOR LI-250A Light Meter is a reliable and affordable option for hobbyists. It measures PAR, Lumens, and Foot-Candles, making it versatile for different light sources. It has a range of 400 to 700nm and a price point of around $500.
3. Apogee MQ-510 Quantum PAR Meter
The Apogee MQ-510 Quantum PAR Meter is another accurate and reliable option for both hobbyists and commercial growers. It has a broad range of 389 to 692nm and can measure light intensity between 0 and 10,000 μmol/m²/s. The price point is around $400.
4. Hydrofarm LGBQM Quantum PAR Meter
The Hydrofarm LGBQM Quantum PAR Meter is an affordable option for hobbyists. It can measure PAR from 380 to 760nm, making it suitable for different light sources. It has a price point of around $170.
5. Dr. Meter LX1330B Digital Illuminance/Light Meter
The Dr. Meter LX1330B Digital Illuminance/Light Meter is an affordable option for hobbyists who are not as concerned with accuracy. It measures PAR, Lux, Foot-Candles, and Lumens, making it versatile for different light sources. It has a range of 0 to 200,000 Lux and a price point of around $30.
Conclusion
PAR meters are essential tools for indoor gardening. They aid in determining the quality of LED grow lights and, consequently, the success of indoor gardening. When selecting a PAR meter, accuracy, range, and price are essential factors to consider. The top PAR meters for LED grow lights in 2021 include the Apogee MQ-500 Quantum PAR Meter, the LiCOR LI-250A Light Meter, the Apogee MQ-510 Quantum PAR Meter, the Hydrofarm LGBQM Quantum PAR Meter, and the Dr. Meter LX1330B Digital Illuminance/Light Meter.