Indopedia All Things Marijuana
In the – often illegal – grower circles, a rule of thumb has emerged, partly thanks to numerous grower reports in hemp magazines, of “one watt per gram” as the standard for efficient growing under artificial light. But one should not be too dogmatic about applying this formula. Why not? Find out in this article.
The yield depends not only on the strain and the light intensity, but also on factors such as the phenotype selected, the strain planted, the size and vitality of the cuttings or seedlings, the length of the germination and initial growth phases, the quality of the water and the supply of nutrients, to name only the most important.
Sodium vapour lamps
Since cannabis was first grown indoors 30 years ago, high pressure vapour lamps have been used to try and get the best possible yields. Over the years, new lighting systems have arrived thick and fast, such as sulphur-plasma lamps or U-shaped energy saving lighting (CFL), but none have managed to become the standard. Until very recently, sodium vapour lamps had no…
