Sep 08, 2019 · The most popular types of light bulbs to use as grow lights are incandescent or fluorescent bulbs, but you can also use LED lights, halogen lights and traditional horticultural grow lights, like high-pressure sodium bulbs (HPS) and metal-halide bulbs (MH).
CFLs, T5s, and other fluorescent grow lights – Average harvest of 0.25-0.5g/watt HPS and LEDs – Average harvest of 0.5-1g/watt An average growers should expect a harvest on the lower side, an experienced grower can expect a harvest on the higher end (or more!)
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The greenhouse ventilation system plays a pivotal role in plant health and crop production. Many novice horticulturalists do not attribute slow growth, poor yields, or problems with pathogens to an inadequate greenhouse ventilation system. Most gardeners understand the importance of ventilation systems for temperature control but benefits derived from ventilation systems are multifaceted.
The propensity of Cadmium to grow whiskers appears to be lower than that of zinc and especially tin. Cadmium whiskers (like tin whiskers) grow spontaneously and are capable of causing electrical failures ranging from parametric deviations to sustained plasma arcing that can result in catastrophic short circuits.”. It is also a cumulative poison.