We always recommend 45 – 65 cm distance. Use the dimmers to control intensity, rather than hanging height—this will save on energy costs and maximise system efficiency.
Yes, always wear UV-resistant sunglasses. We also recommend temporarily dimming the HELLION VS3 LEDs (especially the UV channel) when working in close proximity to the lights.
Start with the grow and UV-A channels on 30 – 50% with the bloom channel off completely. Keep the lights at 65 cm distance. Aim for an average PPFD of 150 – 300 μmol/m2/sec. Gradually increase the veg channel as plants develop.
High blue and UV ratio to red light will help to reduce stretch. Keep grow and UV channel at maximum during transition and bloom at a minimum / zero. Gradually increase bloom channel and dial back UV to 50% once flowers start to appear.
We recommend grow and bloom channels at, or near, maximum with UV at 50%.
We recommend maximum levels of UV and bloom with grow on 75 – 100% combined with reduced air temperatures (25 °C or less).
Regular “full spectrum” light refers to a broad and balanced mix of photons traveling at wavelengths between 400 and 700 nm (PAR). HELLION VS3 LEDs produce plenty of light in the PAR range using 3K and 5K full spectrum diodes as well as a 660 nm red diode. Extended / enhanced full spectrum refers to regular full spectrum supplemented with UV-A / extreme blue and far-red. While these types of radiation do not fall under the classic definition of PAR, recent scientific research has demonstrated that both UV-A and far-red can complement PAR and contribute to photosynthesis—as well as helping to enhance flower and essential oil production.
BPF stands for biologically-active photon flux—a measure of the total amount of photons created by the lighting fixture during one second. It’s similar to PPF (photosynthetic photon flux) but includes photons in the extended PAR range (380 nm to 760 nm). BPF is a more accurate count of photons as it includes UV-A and far-red, both of which are produced by the HELLION VS3 fixtures. BPE stands for Biologically-Active Photon Efficacy—a count of how many photons are produced per Joule of input electrical energy. It’s a quantification of efficiency—what you get out for what you put in! It’s similar to PPE (photosynthetic photon efficacy) but also includes photons in the extended PAR range (380 nm to 760 nm). BPE is a more accurate measure of efficiency than PPE as it includes UV-A and far-red, both of which are produced by the HELLION VS3 fixtures.
During vegetative, transition and early flowering phases, we generally recommend that growers run a slightly warmed grow room. Aim for 27 to 29 °C daytime air temperature, and 23 to 25 °C at night.
Ideal grow tent footprints: (using one or two fixtures in a grow tent) 250W: 75cm x 75 cm (2’6” x 2’6”) 510W: 100 x 100 cm (3’3” x 3’3”) 700W: 120 x 120 cm (4’ x 4’) 1000W: 150 x 150 cm (5’ x 5’) Single fixture row footprints: (combining multiple fixtures in a row) 250W: 75cm x 100 cm (2’6” x 3’3”) 510W: 100 x 120 cm (3’3” x 4’) 700W: 120 x 150 cm (4’ x 5’) 1000W: 150 x 180 cm (5’ x 6’) Matrix set-up footprints: (combining multiple fixtures to cover a whole room) 250W: 100cm x 100 cm (3’3” x 3’3”) 510W: 120 x 120 cm (4” x 4”) 700W: 150 x 150 cm (5’ x 5’) 1000W: 180 x 180 cm (6’ x 6’)
The HELLION Master Controller must be used with the HELLION VS3 LEDs in order to benefit from full three-channel spectral control. HELLION VS3 LEDs are not compatible with regular 0-10V lighting controllers.