cannabis

Room temperature and humidity conditions are similar to those needed by the plants. Heated rooms may be a little low in humidity, but the moisture level in the micro-environment surrounding the plants is usually higher. This is caused by evaporation of water from the medium and by plant transpiration. Since hot air rises and cool air sinks, a fan placed above the plants pulls out the heated air. Squirrel fans and other ventilation fans make these setups a snap. Experienced gardeners choose fans with the capacity to move the room’s cubic area every 10 minutes. As an example a fan in 200 cubic foot grow space moved 20 cubic feet per minute (using semillas de cannabis feminizadas). Increasing the rate of air change using a fan has beneficial effects besides controlling temperature and humidity.

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