I am having issues at week 6 of flowering. This is Nirvana Black Jack in a top drip system with dyna-gro nutrients. I noticed brown tips about 6 days ago and I am also seeing these necrotic spots. I am thinking it is a calcium deficiency which is common in coco. I did a foliar feed on the big fans this morning with some GO CAMG+ to be safe. I am looking for opinions on what this is and if it will affect my yeild in the end and any possiblr solutions to keeping it at bay. This should finish in 3-4 weeks max. Here is my setup-
6x10 sealed room with CO2
2x 600W Agromax dual arc on nextgen digital ballasts..
Hoods are air cooled and draw from outside to outside. I control temp with the speed of the fan.
Running 1500 PPM CO2 on cheap controller
Temps around 85F
Humidity is at 45-50%
Nutrients are Dyna-Gro Grow, Bloom, Protektand Mag-Pro
I also use some H&G Roots Excelerator and Great White for healthy roots.
Medium is 50/50 coco/hydroton with 1 Tbsp Dolomite Lime per gallon of mediumfor calcium.
These are in 5 gal. grow bags and top fed to waste.
I keep PH at 5.8 and res temps around 66F.
Currently running 1.0 EC with RO Water-
4 ml bloom
1 ml grow
3 ml mag pro
2 ml protekt
2 ml floralicous plus
All are per gallon.
Any help would be greatly appreciated!
6x10 sealed room with CO2
2x 600W Agromax dual arc on nextgen digital ballasts..
Hoods are air cooled and draw from outside to outside. I control temp with the speed of the fan.
Running 1500 PPM CO2 on cheap controller
Temps around 85F
Humidity is at 45-50%
Nutrients are Dyna-Gro Grow, Bloom, Protektand Mag-Pro
I also use some H&G Roots Excelerator and Great White for healthy roots.
Medium is 50/50 coco/hydroton with 1 Tbsp Dolomite Lime per gallon of mediumfor calcium.
These are in 5 gal. grow bags and top fed to waste.
I keep PH at 5.8 and res temps around 66F.
Currently running 1.0 EC with RO Water-
4 ml bloom
1 ml grow
3 ml mag pro
2 ml protekt
2 ml floralicous plus
All are per gallon.
Any help would be greatly appreciated!