first time dry ice
- Thread starter hulio
- Start date
I hope it works for you! I would get a box that is fully surrounded by at least 2 inch thick styrofoam unless you want it melt (sublime) fast... Keep in mind that you have to maintain excess nutes light and heat for the Co2 to have any effect. I had a feeling that it caused nute deficiencies in my plants so I backed off from Co2 until they recovered.
My rule of thumb is roughly 2 gramms of dryice per cubic meter of grow space will raise the co2 level by 1000ppm if melted instantly in a sealed container. Now depending on how long it takes for your room to exchange its air and how big your plants are you need to scale up the amount of dry ice. In my case it seems to be 40 fold excess to the 2 gramms per cubic meter for 6- 8 hours. So i end up using 100 grams for my 1.5 m3 grow room to stay above 1000ppm. Thers is a cheap Co2 test kit that may help you figure out exactly how much dry ice to best start off with CO2 Test Kit.
Keep in mind CO2 above 2000ppm can be dangerous for humans and animals! And it can stun plant growth beyond 30000ppm. And don't place dry ice in sealed containers like bottles with crew caps pressure. But I guess that's a no brainer.
I hope this helps. Good luck!
My rule of thumb is roughly 2 gramms of dryice per cubic meter of grow space will raise the co2 level by 1000ppm if melted instantly in a sealed container. Now depending on how long it takes for your room to exchange its air and how big your plants are you need to scale up the amount of dry ice. In my case it seems to be 40 fold excess to the 2 gramms per cubic meter for 6- 8 hours. So i end up using 100 grams for my 1.5 m3 grow room to stay above 1000ppm. Thers is a cheap Co2 test kit that may help you figure out exactly how much dry ice to best start off with CO2 Test Kit.
Keep in mind CO2 above 2000ppm can be dangerous for humans and animals! And it can stun plant growth beyond 30000ppm. And don't place dry ice in sealed containers like bottles with crew caps pressure. But I guess that's a no brainer.
I hope this helps. Good luck!
wafflehouselover
Well-Known Member
btw, co2 is heavier then air so if you dont have something blowing the co2 when it exits that syrofom onto the plant then you can run some sort of tubing around the plant or on top of the plant.