Relative humidity (RH)
Growing Marijuana in Rockwool Relative humidity (RH) The relative humidity of the air influences the functioning of the stomata, among other things. Cannabis flourishes the best with an RH of…
Influencing air quality
Growing Marijuana in Rockwool Influencing air quality The amount of CO2 in the open air is approximately 0.03 to 0,04%. The amount of carbon dioxide is also expressed in parts…
Air
Growing Marijuana in Rockwool Air Almost all living beings are dependent on light of satisfactory quality. For humans, that means that sufficient oxygen must be present in the air, and…
Proper lighting for cannabis
Growing Marijuana in Rockwool Proper lighting for cannabis The advantage of growing cannabis indoors is the fact that you can give the plants the feeling that it’s their flowering season…
Using high-pressure gas lamps
Growing Marijuana in Rockwool Using high-pressure gas lamps High-pressure gas lamps may only be used in the fitting meant for that particular lamp type. High-pressure gas lamps all have their…
Choices for lamps
Growing Marijuana in Rockwool Choices for lamps We prefer high-pressure sodium lamps, and mercury-iodide lamps for illumination. Ordinary light bulbs are not suited for cannabis-growing due to their considerably short…
Light
Growing Marijuana in Rockwool Light Plant growth involves the conversion of light energy into plant-building materials (photosynthesis, see chapter 2). Two factors are important for optimal growth. In the first…
Grow room layout
Growing Marijuana in Rockwool Grow room layout First, the lamps are installed. It’s important to ensure enough power capacity. The three lamps together require 1200 watts of power, while the…
The shopping list
Growing Marijuana in Rockwool The shopping list You don’t need a lot of equippement to grow cannabis on a (very) small scale. A grow tank, soil, nutrients, enough light, and…
The grow room
Growing Marijuana in Rockwool The grow room The first requirement for a grow room is that it must enable you to know how best to control the temperature, air circulation,…
Necessities and Climate Control
Growing Marijuana in Rockwool Necessities and Climate Control In this chapter, everything necessary for home-growing is discussed. After describing the conditions required for your grow room, we pay some attention…
Factors influencing the growth of plants
Growing Marijuana in Rockwool Factors influencing the growth of plants We conclude this chapter with a sum-up of the principal concerns for the optimal growth and flowering of plants. The…
Intake and transport of materials
Growing Marijuana in Rockwool Intake and transport of materials Water, and the nutrients dissolved in it (salts), is absorbed through the root hairs of the plant. The condition of the…
Osmotic processes
Growing Marijuana in Rockwool Osmotic processes With osmosis, we mean the processes in which water and nutrients are absorbed by plants. Osmosis is based on the principle that the plant’s…
Principles of growth
Growing Marijuana in Rockwool Principles of growth Plants change CO2 and H2O into glucose under the influence of light. Glucose is the chemical building block for the structure and sturdiness…