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

will need to add: 1500 ppm minus 350 ppm = 1150 ppm CO 2 .
    A poorly sealed grow room can have 20 percent leakage which should be added to the amount of CO 2 required.
    For example, to get the desired 1500 ppm of CO 2 for a grow room with 21.6 cubic meters, add: 21.4 × 1150 = 24.61 liters × 1.2 = 29.53 liters.
    This information tells you to set the flow meter to 6 liters per minute and run the gas for 5 minutes.
    Leave the gas-enriched air for 20 minutes and exhaust the air from the garden room.
Metric Conversion Chart - Approximations

    Mass and Weight
    1 gram = 0.035 ounces
    1 kilogram = 2.21 pounds
    1 ounce = 28.35 grams
    1 pound = 0.45 kilograms
    1 inch (in) = 25.4 millimeters (mm)
    1 foot (12 in) = 0.3048 meters (m)
    1 yard (3 ft = 0.9144 meters
    1 mile = 1.60937 kilometers
    1 square inch = 645.16 square millimeters
    1 square foot = 0.0929 square meters
    1 square yard = 0.8361 square meters
    1 square mile = 2.59 square kilometers
    Liquid Measure Conversion
    1 pint (UK) =0.56826 liters
    1 pint dry (USA) = 0.55059 liters
    1 pint liquid (USA) = 0.47318 liters
    1 gallon (UK) (8 pints) = 4.5459 liters
    1 gallon dry (USA) = 4.4047 liters
    1 gallon liquid (USA) = 3.7853 liters
    1 ounce = 28.3495 grams
    1 pound (16 ounces) = 0.453592 kilograms
    1 gram = 15.4325 grains
    1 kilogram = 2.2046223 pounds
    1 millimeter = 0.03937014 inches (UK)
    1 millimeter = 0.03937 inches (USA)
    1 centimeter = 0.3937014 inches (UK)
    1 centimeter = 0.3937 inches (USA)
    1 meter = 3.280845 feet (UK)
    1 meter = 3.280833 feet (USA)
    1 kilometer = 0.6213722 miles
    1 cm = 0.001 meter
    mm = 0.0001 meter
    nm = 0.000 000 001 meter
    gm = grams
    sq = squared
    EC = electrical conductivity
    ppm = parts per million
    Celsius to Fahrenheit
    Celsius temperature = (°F - 32) × 0.55
    Fahrenheit temperature = (°C × 1.8) + 32
    Light Conversion
    1 foot-candle = 10.76 = lux
    1 lux = 0.09293
    lux = 1 lumen/square meters
    lumens per square foot = lumens per meter squared
    cfm (cubic feet per minute) = liters per hour Inches of rain = liters per meter squared
    psi (pounds per square inch) = kg per square meter
    1 liter = 1 kg (of pure water)
    1 kilometer = 1000 meters
    1 meter = 100 centimeters
    1 meter = 1000 millimeters
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Cannabis Seed Companies
    Many companies were not included in this abridged list because they do not have catalogs and were too difficult to contact.
    Almighty Seeds
    www.almightyseeds.com

    BC Bud Depot
    No catalog
    www.bcbudonline.com
    Black Label Seeds

    www.highqualityseeds.nl
    British Colombia
    Seed Co.
    No catalog
    www.thebcsc.com
    Kannabia

    www.kannabia.net
    Chimera

    www.chimera_seeds.co.uk
    DJ Short
    No catalog. No website
    Dutch Passion

    www.dutch-passion.nl
    Flying Dutchmen

    www.flyingdutchmen.com
    Good House Seeds

    www.goodhouse_seeds.com
    Greenhouse

    www.greenhouse_seeds.nl
    Hemcy

    www.hemcy.com
    High Quality Seeds

    www.highquahty_seeds.nl
    Homegrown Fantaseeds

    www.homegrownfantaseeds.com
    Legend Seeds

    www.legendsseeds.com
    Magus Genetics

    www.magusgenetics.com
    Mandala Seeds

    www.mandalaseeds.com
    Mr. Nice-Swiss

    www.mrnice.co.uk
    Nirvana

    www.nirvana.nl
    No Mercy Supply
    No catalog
    www.nomercy.nl
    Owl’s Production

    Website: None
    Paradise Seeds

    www.paradise-seeds.com
    Reeferman Seeds

    www.reefermanseeds.com
    Sagarmatha

    www.highestseeds.com
    Sensi Seeds

    www.sensiseeds.com
    Serious Seeds

    www.seriousseeds.com
    Soma Seeds - No catalog
    www.somaseeds.nl
    Spice of Life

    www.spiceoflifeseeds.com
    THSeeds

    www.thseeds.com
    Valchanvre

    www.valchanvre.ch
    Willy Jack -No catalog
    www.willyiack.com
    World Wide Seeds
    No catalog
    www.world_wideseeds.com

Glossary
    absorb: to draw or take in: Rootlets absorb water and nutrients.
    AC (alternating current): an electric current that reverses its direction at regularly occurring intervals: Homes have AC.
    acid: a sour substance: An acid or sour soil has a low pH.
    active: a hydroponic system that actively moves the nutrient solution
    adobe: heavy clay soil that drains slowly: Adobe is not suitable for container gardening.
    aeration: to supply soil and roots with air or oxygen
    adventitious roots: roots that grow from unusual spots, as on the (stem) pericycle or endodermis of an older root. Auxin level may influence this type of root growth.

Adventitious roots
    aeroponics: growing plants by misting roots suspended in air
    aggregate: a substrate that is of nearly uniform size and used for the inert hydroponic medium
    agronomically: having to do with the economics