True Living Organics - The Ultimate Guide to Growing All-Natural Marijuana Indoors (2012)

Always cover any power lights or LEDs on any electrical equipment in your grow room, to stop
hermies appearing
I run MH bulbs for 1 year before I replace them. HPS bulbs can go 1.5 years in my experience
before needing to be replaced. Make sure to use some type of record keeping about the date on which
you first fired up your bulb. I use a simple piece of masking tape on the hood with the date marked
using a Sharpie. Also computer programs like Outlook have calendar programs with reminders, and
your phone usually has a scheduling application for reminders. You can always go with the most
reliable and just mark it on a larger type calendar in the grow room itself.
REV’S TIP
I get my Eye Blue 400 watt bulbs at Plantlighting Hydroponics online at:
http://www.plantlightinghydroponics.com/eye-blue-metal-halide-lampsc-375_596.html.
Grow Room Temperatures and venting
This is a big deal! This is one of those classic things that will come back and bite you in the ass
around flowering time if you do not address it in the beginning. Using TLO methods, you do not have
any need to bring the bulbs in super close to the plants. I always keep a minimum distance of 18
inches and more like 24 inches really, using 400 watt lamps. It’s all good; don’t worry about trying to
squeeze every bit of growth out of the plant by jamming a bulb down her throat, so to speak. In my
experience, by having the light this far away you won’t sacrifice anything in yields, as long as your
lights are in good shape. TLO growing works better with your lights backed off a bit from what you
would run them at using something like hydroponics with CO 2 additions to the air. Too much heat is a
very bad thing during late flowering and temperatures at the plant tops when lights are too close are