Digital Gardner partnered with BML Horticulture and a well-respected, large-scale, commercial Cannabis grower in Denver to conduct a side-by-side comparison between HPS lamps and new BML SPYDR 1200 LED fixtures. As of the date we started the test, we could not find any documented results of an LED lighting solution out-performing a HPS lamp. We have seen a few “case studies” that did show increased yields of dry weights after using other LED lighting solutions. But after Digital Gardener and our team personally met with the growers mentioned in the studies, and the scientist involved, we concluded that the previous claims were not true!
The BML SPYDR 1200 scientifically provides almost twice as much PAR over a uniform canopy than the best HPS lamps. This requires growers to face a new challenge to be able to match increased PAR levels with the appropriate levels of nutrients, C02 and water.
The results of the BML 1200 during the full Flowering stages are truly ground breaking!
Growers have optimized the use of 1000 Watt HPS lamps over decades. Our customers will see much better results as they modify and optimize their grows with the new increased amounts of PAR levels.
Full optimization will include growing the plants under BML 600’s lights through the Vegetation Stage, utilizing supplemental LED lights during the flowering stage, increasing the nutrient feedings and CO2 levels.
While everyone was blown away with the results from one strain we tested, the other strain did not do as well. We only had modest improvements in dry weight.. However we are convinced that we will see even better results on both strains as our customer optimizes the conditions. Both strains under the LED lights seemed to finish a few days sooner than the HPS flowers.
The side-by-side test included two different strains of Cannabis. Two sets of 4’ X 4’ trays were used, each containing nine plants. Each set contained a specific strain, one under the HPS lamps and the other under the BML SPYDR 1200. The test spanned the entire flower cycle period and had identical room environments and nutrient feedings. The results were measured against both the 6 month historical average yield-per-strain. Below are the actual PAR mappings of both the 1000 watt High Pressure Sodium horticulture lamps and the BML SPYDR 1200’s.
New SPYDR 1200
BML’s 1st Commercial Flowering Test
Details and Lessons:
The PAR levels at canopy surface were effected by neighboring plants and lights. The PAR mapping on the HPS received light trespass along the back and both sides of the 4 X 4 area. Typical measurements on the edge without the light trespass would be much lower, closer to 450 and 500 µMoles. The PAR mapping on the SPYDR 1200 also received light trespass on the left hand side and shading on the right hand side due to a taller strain being grown essentially preventing light trespass on the right hand side.