News — grow room

Why Control CO2 Levels at Night in Plant Grow Rooms?

Author: Michael Forster, PhD, Edaphic Scientific  This is an abbreviated version of a longer article on the same topic which can be found here. Growers can artificially increase the amount of atmospheric carbon dioxide (CO2) available to plants to improve growth and yield. But at night, plants do not uptake CO2 for photosynthesis. Maintaining artificially high levels of CO2 at night may, therefore, be wasteful. Low cost technology is now available to automatically switch on and off the CO2 gas supply during the day and night. In this article, we outline 5 reasons why you may consider turning off the...

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Cheap Adjustable Stand for Grow Room CO2 Controller

Here is a handy tip if you use our RAD-0501 Day Night CO2 Monitor & Controller for Greenhouses and Grow Rooms and want to get the maximum benefit from increased CO2. Most growers who use CO2-enrichment suggest for maximum accuracy, the CO2 sensor in the controller should be at the same height as the top of the foliage. So instead of permanently mounting the controller, make an adjustable mount that lets you quickly raise the controller as your plants grow. To do this, all you need is a 1x10 in. by 6 ft. board - available at the local lumber...

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Constant CO2 Level in Greenhouse

  Controlled CO2 gas inflow and improved air mixture can help maintain optimum CO2 levels in small indoor greenhouses or grow rooms. These were the lessons learned after working with a client who was attempting to control the CO2 levels in a group of 3 10x20” greenhouses. The client wanted to maintain different consistent CO2 levels in each greenhouse to test the effects on the plants inside. To control the CO2, he used our iSense 1% CO2 Level Controller, a more industrial version of our Day Night CO2 Monitor & Controller for Greenhouses. In one test greenhouse, the CO2 controller...

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CO2 Calculator for Grow Room or Indoor Greenhouse

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. If you give your plants the perfect amount of light, water, and nutrients, the limiting factor in their growth will be the amount of CO2 in the air. While normal outdoor CO2 levels (about 400ppm) will achieve normal plant growth, doubling or tripling the CO2 levels can increase the growth rate. However, above 2,000ppm CO2 becomes toxic to plants, and above...

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