Marijuana can withstand extreme temperatures. There is a side effect of it. Marijuana will slow the chemical processes. A stable temperature of 68 ° F | 20 ° C is preferable. Low 57 ° F | 14 ° C, the root growth of marijuana plants low temperature will slow down rapidly to produce weak plants. Should not put the pots directly on the cold floor, which will slow down root growth. Over 75 ° F | 24 ° C pests have the perfect place to develop to maintain a stable temperature in the room to save many problems. When you have a burning 600 watts or more of the room warms up quickly, especially in summer so a fan may be necessary.

 

In winter, the lights might not need a fan, but when the lights are off for twelve hours the temperature drops quickly, so that you can use an electric or gas heather with a thermostat to keep temperature stable.If using a fan does not blow too hard let the plants directly in windy plant will be kept short and uses its energy to make a thick stem instead of wide branches.

Humidity:

About the same story goes for humidity, the marijuana plant can withstand both very low and high humidity however fifty percent is the best. However with more then a few marijuana plants humidity will rise which increases the chance of diseases and pests so use of a humidity meter is also advised.
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