The last comparison is for the in-between consumer who tries to balance price and performance while demanding good quality. These customers are often the most informed and do the most research before buying to ensure they are making the best decision. Balancing customers often realize that too low a price means the product is sacrificing somewhere on quality, while too high a price doesn't always guarantee high quality or performance, and therefore they compare all factors very carefully.
Many growers who are still uncertain about LED Grow Lights, but can justify a $300 loss if they don't work to their expectations often purchase small spot lights to use for testing. Hydro Grow receives inquiries from these customers on how our21X-PRO compares to the H150 from Kessil, as both lights can be purchased for nearly the same amount of money and has the same wattage. Due to the number of these requests we purchased a Kessil H150 Purple to test against the 21X-PRO in our light testing laboratory where all Hydro Grow PAR testing takes place. The lights were hung at various distances over a 2' x 2' grid with measurements taken every 3" to ensure accuracy.
The Kessil light uses a dens-matrix LED system comprised of 21 chips with a 60 degree conical reflector and frosted lens. The Kessil chip uses 5 different wavelengths of LEDs and consumes 36W of power with a small cooling fan while operating at just over 155°F. Peak output from the H150 was measured at 344 µmol at 12" from the fixture. The 21X-PRO by comparison uses 21pcs 3W LED of 6 different wavelengths with our patent-pending X-lens. The 21X-PRO consumes 36W of power with a small cooling fan while operating at just over 100°F. Peak output from the 21X-PRO was measured at 1221 µmol at 12" from the fixture.
Consumers who were lured by Kessil's promises of sophisticated technology and a penetrating dense-matrix LED that emits far more light than the competition are now experiencing what 3.5X less intensity is like with the Kessil H150. The data shows that despite both lights costing about $249, drawing 36W of power and using 21 LED chips, the sophisticated X-Lens and spread out design of the Hydro Grow light engine create 3.5X the output over the same sized area as the Kessil H150. The 21X-PRO also comes with a 3-year warranty and an upgradeable modular design, while Kessil owners receive only a 1 year warranty. Based on the real-life test data the Hydro Grow light has the best price and best performance since you would need 3.5 of the H150 light to equal the output of a single 21X-PRO. Based on operating temperature alone it can be concluded the 21X-PRO also has better overall build quality. To learn why the Kessil H150 has such low PAR output compared to the 21X-PRO refer to Why the LED BIN is Important, Light Spectrum and Lensing.