Marijuana Horticulture: The Indoor/Outdoor Medical Grower's Bible

conjunction with the wings and referred to as a Super Spreader. These fit below the lamp and spread excess light and heat from that hot area across the light’s entire footprint. They allow lamps to be close to plants to produce rapid growth but keep growth rate and plant size even.
    When compared to the first, this crop almost seemed to grow itself! The irrigation system alone (reservoir size, how many days reserve, nutrient dosing, the coco/Danish tray/run to waste system) saved Nigel and Terry about two hours a day.
    The ventilation design combined well with the simple, effective lighting strategy. Air was pumped in and pushed up from below, cooling plants and lights on its way up. The heated air would rise naturally, be trapped by the ceiling, sucked towards the vent/filter, and exhausted from the room. With a small amount of adjustment, the air temperature could be maintained at 80-82°F (27°C to 28°C) even when the plants formed a dense mass across the whole room.
    The wing reflectors could be adjusted to provide even lighting when they were close to the plants (growth and flowering phases) and when they were farther away (early vegetative and final maturation phases). When reflectors were hung low over the plants, the spreaders dealt with any hot spots and insured even lighting.
    Nigel and Terry’s second crop grew vigorously and evenly all the way through to maturity. They had a small problem early on with spider mites. Seems the clones they bought had a few mites onboard. The mites were dealt with organically and effectively.Bob had suggested the boys use Ecolizer organic nutrients and follow their program exactly. The program suggested misting clones regularly with their “Bugs Away” foliar feed. This solution contains nutrition plus essential oils that coat mite eggs and suffocate them. No chemicals and it worked!
    After a total of nine weeks growing, the room was filled with plants that formed a dense layer of evenly developed, sticky, fat bud. The room resembled a “sea of green” rather than a collection of plants of assorted size and shape. As they harvested, Nigel and Terry joked about mowing down a mass of sticky green corn cobs. Cutting, hanging, drying, and particularly manicuring this much weed was one hell of a job and took them a month to finish. The final yield was 12.5 kilos and the quality was A+.
    At this point, the boys had covered all their expenses, they were almost half way into their third crop (which was growing strong), and were already 10 kilos in the black. This had been an ambitious project. Nigel and Terry had not achieved success without significant risk and a lot of hard work! Guess who was planning a well deserved “holiday in da sun”?
Comparing Statistics:
    First Crop, 8.4 pounds (3.8 kg) / 6000 watts = 0.02 ounces (0.63 g) / watt
    8.4 pounds (3.8 kg) / 14.4 square yards (12 m sq) = 11.1 ounces (316 g) / m sq
    Second Crop, 27.6 pounds (12.5 kg) / 8400 watts = .05 ounces (1.49 g) / watt
    27.6 pounds (12.5 kg) / 28.7 square yards (24 m sq) = 18.4 ounces (521 g) / m sq
    – Bob’s advice helped the boys increase their power efficiency (g / watt) by 137 percent.
    – Bob’s advice helped the boys increase their space efficiency (g / m sq) by 65 percent.

Nigel and Terry grew their entire third crop for only $52 per pound (106 euros per kilo).
Calendar and Checklist
    A calendar helps growers know what to do and when to prepare to do it. A checklist adds necessary routine to the process. The calendar outlines the average three-month life cycle of clones. It notes major points of interest during each stage in life. The weekly checklist consists of a few things that must be done every week to ensure a successful crop.
    Savvy growers read and consider each and every point on the calendar weekly. They mark each point with a check when finished with it.
    Growers should spend at least 10 minutes per day, per lamp, to have a productive garden. This is enough time to complete all the stuff on the weekly calendar. Much of gardening is simply watching and paying attention, but it takes time to have a decent, productive garden. If using CO 2 enrichment or hydroponics, allow 20 minutes per day for maintenance.
     
----
Weekly Checklist
    Check the following to see if they function properly:
Air ventilation
Air circulation
Humidity: 40-60 percent - flowering
Humidity: 60-70 percent - vegetative
Temperature: day 70-75°F (21-24°C); night 60-65°F (16-19°C)
Soil moisture (dry