{"id":4518,"date":"2023-04-12T19:25:12","date_gmt":"2023-04-12T17:25:12","guid":{"rendered":"https:\/\/marijuanagrowing.com\/?p=4518"},"modified":"2023-11-10T16:02:56","modified_gmt":"2023-11-10T15:02:56","slug":"indoor-led-hps-lights-case-studies-2-chapter-13","status":"publish","type":"post","link":"https:\/\/marijuanagrowing.com\/indoor-led-hps-lights-case-studies-2-chapter-13\/","title":{"rendered":"Indoor Led HPS Lights – Case Studies #2 \u2013 Chapter 13"},"content":{"rendered":"\n
Toni is a passionate and precise medical cannabis gardener. He knew nothing about cannabis until 2006 when he was diagnosed with fibromyalgia, a painful and debilitating disease. After seeking relief through prescription pills and, later, through cannabis, Toni found that consuming cannabis makes his days less painful. Cannabis also gives him an appetite and energy to enjoy life. Like so many medical cannabis patients, Toni traded a handful of prescription pills for medicinal cannabis.<\/p>\n\n\n\n
As a medical patient, Toni has a passion for cannabis cultivation. He is constant\u00adly experimenting with new varieties and products, collecting information, and fine-tuning his gardens. This case study follows one of his gardens and interjects a few examples from past gardens. <\/p>\n\n\n\n
Toni is an expert photographer. When it came time to write up the research from my garden visits and interviews with Toni, it was difficult to pare down the photos and detailed information about his gardens.<\/p>\n\n\n\n
Toni is a stickler for cleanliness and order in the garden. Cleanliness and the prevention of diseases and pests are at the top of his list. He took weekly steps during the vegetative growth stage to prevent fungus, insects and mites, and their eggs.<\/p>\n\n\n\n
Toni avoids growing autoflowering feminized plants. He finds they require too much light (20 hours daily) and electricity for the amount of production rendered. (But increasing the hours of light increases harvest weight up to 30 percent.)<\/p>\n\n\n\n
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The feminized \u2018Black Jack\u2019 (Sweet Seeds) seeds shown here had been germinated in moist paper towels and were ready to plant. Much of this rootlet was covered with delicate feeding roots that quickly spread out into the growing medium. <\/p>\n\n\n\n
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Eight feminized \u2018Black Jack\u2019 and 8 feminized \u2018Jack 47\u2019 (Sweet Seeds) were germinated in 1.1-quart (1 L) containers growing under a 400-watt metal halide. This photo was taken 20 days after germination. The small plants were watered with dilute Root Juice (EC 720 mS, pH 6.2). A humidifier helped protect clones from moisture stress.<\/p>\n\n\n\n
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Vegetative Growth<\/h2>\n\n\n
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A 400-watt metal halide illuminated 16 feminized \u2018Kalashnikova\u2019 seedlings (Green House Seed Company) grown in 1.1-quart (1 L) containers. The plants had recently been sprayed with nutrient solu\u00adtion having an EC of 250 mS at pH 6.0.<\/p>\n\n\n\n
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Sixteen feminized \u2018Kalashnikova\u2019 seed\u00adlings were transplanted into 3-gallon (11.4 L) containers and packed into this grow tent. A fertometer was used to measure electrical conductivity in the substrate to reveal the overall fertilizer strength.<\/p>\n\n\n\n
Toni applied the following fungicides in weekly rotation: tetraconazole, pen\u00adconazole, and myclobutanil. He used a handheld UVC lamp (CleanLight Hobby Unit from HortiTec) to kill fungus and insects, as well as mites and their eggs. He also used a sulfur vaporizer; see \u201cSulfur Burners<\/a>\u201d.<\/p>\n\n\n\n