blackonblack
Well-Known Member
Guys. This is my first grow. I have 6 plants under 296 W CFL using ebb & flow hydro. As soon as I turned the lights on to 12/12 I've been getting some powdery mildew. It's not a huge problem as there really are only a few spots on all the leaves but still I am worried it will spread and become a larger problem later down the road.
My temps drop to around 60 at night. There is no way I can increase this as I am growing in my shed with a heater and that's just the warmest its getting this time a year.
I already sprayed the plants once using Safegrow Mildew Cure
http://goodtogrowri.com/uploads/merch/SG0237PT.jpg
Which seemed to work but 3 days later small amounts came back which I think is due to inadequate cover when I sprayed the first time. ( I wasn't too liberal with the spray)
Anyways my friend gave me a small amount of a systemic mildew fungicide called Exel LG. He said to put 1/8 tsp of the stuff in to my hydro ebb & flow reservoir.
http://www.greenfireshop.com/cart/published/publicdata/MYSHOPDATABASE/attachments/SC/products_pictures/P20701.JPG
I have 2 fans that blow over the plants which I turn off at night. I think that may be the problem, I am going to switch them on 24/7 tonight to get better air flow at night when the problem worsens.
Daytime humidity is at 50%
Should I use the exel lg stuff? Do I just add it to the reservoir and let it stay or should I run it for a period of time and then drain the reservoir?
I plan to spray the plants again with safegrow in 4 days which is what the instructions said.
I am also thinking about building a sulfur burner but that seems like a hassle.
My temps drop to around 60 at night. There is no way I can increase this as I am growing in my shed with a heater and that's just the warmest its getting this time a year.
I already sprayed the plants once using Safegrow Mildew Cure
http://goodtogrowri.com/uploads/merch/SG0237PT.jpg
Which seemed to work but 3 days later small amounts came back which I think is due to inadequate cover when I sprayed the first time. ( I wasn't too liberal with the spray)
Anyways my friend gave me a small amount of a systemic mildew fungicide called Exel LG. He said to put 1/8 tsp of the stuff in to my hydro ebb & flow reservoir.
http://www.greenfireshop.com/cart/published/publicdata/MYSHOPDATABASE/attachments/SC/products_pictures/P20701.JPG
I have 2 fans that blow over the plants which I turn off at night. I think that may be the problem, I am going to switch them on 24/7 tonight to get better air flow at night when the problem worsens.
Daytime humidity is at 50%
Should I use the exel lg stuff? Do I just add it to the reservoir and let it stay or should I run it for a period of time and then drain the reservoir?
I plan to spray the plants again with safegrow in 4 days which is what the instructions said.
I am also thinking about building a sulfur burner but that seems like a hassle.