I'm trying my first ever indoor grow and I've been a miserable failure.
I have a 3X2X6 grow room in an unheated storage shed. I have 1-250 HPS and 1-250 HPS/MH light.
I popped 5 seeds, one was a runt and wasn't going to make it. The other 4 were planted in NK Starter soil (peat moss, perlite, vermiculite, and lime for ph balance). I left them in the house under CFLs for about three days. I moved them into the grow room under the 250 MH. I started them about 24 inches from the light and lowered it over several days to 12 inches. The 250 HPS is also burning but it's not directly above the plants.
I have a 180 cfm exhaust fan running on a thermostat to keep the temps between 72 and 78 degrees. Due to the cold weather, I can't keep the exhaust going 24/7.
For the first three days, everything was great. The next thing I knew, two plants were badly burned. I raised the lights 2 inches. Two days later, one of the two remaining plants was burned. I raised the lights again. Now, my one remaining plant is showing signs of burning. I have not added any nutes.
So, where have I gone wrong? I did not have a fan for circulation purposes. It's winter and hard to find one. I thought it was mainly to help produce stem strength so I wasn't too concerned. I wonder if maybe hot spots developed during the time my exhaust fan was off. The exhaust doesn't stay off more than 5 or 10 minutes.
Comments or advice would be appreciated.
I have a 3X2X6 grow room in an unheated storage shed. I have 1-250 HPS and 1-250 HPS/MH light.
I popped 5 seeds, one was a runt and wasn't going to make it. The other 4 were planted in NK Starter soil (peat moss, perlite, vermiculite, and lime for ph balance). I left them in the house under CFLs for about three days. I moved them into the grow room under the 250 MH. I started them about 24 inches from the light and lowered it over several days to 12 inches. The 250 HPS is also burning but it's not directly above the plants.
I have a 180 cfm exhaust fan running on a thermostat to keep the temps between 72 and 78 degrees. Due to the cold weather, I can't keep the exhaust going 24/7.
For the first three days, everything was great. The next thing I knew, two plants were badly burned. I raised the lights 2 inches. Two days later, one of the two remaining plants was burned. I raised the lights again. Now, my one remaining plant is showing signs of burning. I have not added any nutes.
So, where have I gone wrong? I did not have a fan for circulation purposes. It's winter and hard to find one. I thought it was mainly to help produce stem strength so I wasn't too concerned. I wonder if maybe hot spots developed during the time my exhaust fan was off. The exhaust doesn't stay off more than 5 or 10 minutes.
Comments or advice would be appreciated.