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

often 10°F or more, higher than the growing room temperatures. This can result in “bolting” which is
a type of super stretch brought about by temps too high at the plant tops and will result in airy buds
and can cause hermaphrodites as well if the temps are too hot. Bolting can really get crazy with HPS
bulbs too close, and those particular bulbs seem to catalyze the bolting effect, as far as I have seen.
A digital thermostat controlled switch is used for cooling or heating the grow room
Generally speaking, between 60–90°F is a good range of temperatures, and the temps in my room
go from about 86°F. with lights on, and about 64°F. with lights off. Beware of the temps at the plant
tops during times of higher temperatures! This can cause big trouble and unless you check it, you
won’t know for sure. Be proactive here and please just take my advice and check it.
It is hard to overdo your venting, and fresh air is key. I don’t like to supplement CO 2 when growing
TLO, but if I had trouble bringing in fresh air I would consider lightly amending the air with CO 2
from a tank, using a timed, intermittent release regulator valve. If you are ever messing with CO 2
additions always pick yourself up a CO 2 detector—like a smoke detector—so you don’t pull some
ultimate stoned move and kill yourself. When you read things like “air exchange” and “fresh air” or
“exhaust fans” in growing books, don’t dismiss them because this is a huge keystone piece of your
TLO grow if you want it to be super natural, and I have a feeling you do. Always pull your air through
rather than pushing it whenever possible. This makes such a huge difference you will be blown away
(if you’ll pardon the pun). Any halfway decent grow shops will have nice venting fans for sale, and I
like Dayton and Elicent brands for reliable fans. I have never seen either one of these brands fail after
many years of use, and the Elicent fans are also super quiet when operating.