Grow room and indoor greenhouse growers online agree that for optimum plant growth, you should enrich the air around the plants with carbon dioxide (CO2) during the daylight growth cycle. Photosynthesis (plant growth) requires light, nutrients, water and CO2.
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The Day/Night CO2 Monitor and Controller is set by default to 1,000ppm CO2. You can change this in the setup. CO2 controllers will automatically stop powering the tank regulator during the dark period. Mount the controller 2-3 feet above the floor of the grow room, or just above the canopy of plant tops as they grow taller.
Turn on the gas at the tank. Plug the regulator into the Day/Night CO2 Monitor and Controller, and plug the controller into a grounded 120VAC wall outlet. Because the CO2 level in your grow room will be less than 1,000ppm, the regulator will turn on instantly.
A 100% air exchange every 2 hours (air leakage through cracks and doors) is normal in most grow rooms and tight greenhouses, so you will use .448 cu.ft. of CO2 every 2 hours, or about .224 cu.ft per hour (.448/2). Using .224 cubic feet per hour and 18 hours of daylight, you would expect to use about 4 cubic feet per day (.224x18). This means the 20lb. tank should theoretically last 44 days (175/4), while the 5lb. tank will last about 11 days (44/4). These estimates do not take into account plant uptake of CO2, opening doors or curtains, or other opportunities for CO2 to escape and require replenishment.
3. A fan inside the grow area pointed at the end of a length of tubing from the regulator will circulate the CO2 in the air for maximum benefit. Otherwise, you can connect the regulator to a length of tubing with pin-holes strung around the top of the grow room so that the CO2 will "drop" on the plants (CO2 is heavier than air).
What indoor growers may not realize is that high levels of CO2 while vital to plants, are dangerous to individuals. It's true. A sealed, closed indoor grow room can trap dangerous levels of carbon dioxide that can lead to severe negative health effects, such as dizziness, unconsciousness, and even fatality.
While being exposed to higher concentrations of carbon dioxide can be fatal, using CO2 in your grow room can be safe - if the equipment is setup correctly and a carbon dioxide safety monitor, is installed.
For decades, indoor grow rooms have used CO2 generators that burn fossil fuels to generate carbon dioxide. What these CO2 generators are used for primarily is to enhance CO2 levels in order to initiate plant growth and promote crop productivity.
For those that are working in indoor greenhouses, grow rooms, or cultivation facilities - an entry level CO2 monitor and controller will maintain the required CO2 levels - typically between 800-1,500ppm.
In order to introduce CO2 to your grow space, it must be done in a precise, controlled, calculated, and well-planned manner. Simply opening a valve on a CO2 tank at one end of the room and hoping that the gas will evenly disperse throughout your grow room, is not an ideal scenario.
Unlike greenhouses used for flowers and vegetable growing, the majority of cannabis growers and cultivators, are moving to sealed grow environments. In fact, almost every expert or commercial grower prefers sealed grow rooms as opposed to open-loop grow spaces.
For example, in states like Michigan and California, local fire marshals are now requiring licensed cannabis operations to install CO2 monitors for safety in each grow room. A similar CO2 safety monitoring device is the Remote CO2 Storage Safety 3 Alarm. Their requirement is that the device be mounted at levels that will ensure that asphyxiation does not occur. Other localities have begun requiring the addition of strobe lights, exhaust fan activation, and even require safety monitors to trigger automatic notifications to the local fire department. 2ff7e9595c
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