Indoor grow specialists all over the world use blue heavy metal halide lamps mh for vegetative growth and switch to red heavy high pressure sodium hps.
Metal halide vs led for veg.
Modern led grow lights such as those with cob chip on board technology or quantum boards can now provide solid light intensity and penetration even for the most.
Most quality leds emit a light that works for both veg and flowering while some come with a switch to change the light spectrum according to the appropriate phase.
While either type can be used for the full growing cycle when combined using an mh grow light for vegetative growth and flowering under an hps grow light is the most recommended hid grow light setup because utilizing the.
The opportunity to convert to t5 lighting has been around for many years and saves your bottom line 50 immediately.
In this case we ll be comparing leds and metal halides but all bulb types can be quantified with this measurement.
Understanding efficacy is also important to understand why leds save you so much on energy costs.
Those who use hps lights most often use metal halide for vegetative growth as well since its light spectrum is better suited for vegging.
Efficacy is a measurement of how well a light source produces light.
This means that many growers with hid light setups have separate veg and flowering lights or at least multiple bulbs which adds to the expenses of maintaining an hid setup.
First of all if you re still using 400 watt metal halide hid lighting in your facility it s definitely time to make a change period.
The hid lighting category includes metal halide mh and high pressure sodium hps lights.
Common wattages of metal halide grow lights fro cannabis include 250w.
High bay conversion from 400 watt metal halide hid fixtures.
The high amount.
Metal halide grow lamps are popular for use in vegetative growth phase of cannabis due to very high blue content of light.
Other lighting technologies lack the punch to produce tight node spacing shorter distances between branches on taller plants.