7Likes
LinkBack URL
About LinkBacks
Reply With Quote
In the first picture they would be more black spots because it is necrosis. My guess is it might be Mn toxicity. And the other pictures, it is difficult to tell but looks like it could be P deficiency.
Whats your temp differential ?
Purple spots on leaves / Northern Lights
hi folks
Ive found some purple spots on my leaves. Also u can see yellowing and other horror in my grow but thats another story. They were root bounded and had to transplant them in day 15 in Flower (It was around 3-4 days ago). Anyway they seem to be ok now except this purpling issue. My guess is underfeeding cause they still get just 2ml/L BioBizz Bloom.
Set up:
Strain: Northern Lights
Light: 250W CMH
Medium: BioBizz All-mix Soil
Nutes: BioBizz Grow, Bloom and Unsulphured molasses (cause my topmax went off)
Pots: 4Gallon
If you think thats not enough information please have a look at my journal. http://www.rollitup.org/grow-journals/603446-250w-cmh-northern-lights-organic.html
Day 18 in Flo
image007.jpgimage006.jpgimage005.jpgimage004.jpgimage003.jpgimage002.jpgimage001.jpg
In the first picture they would be more black spots because it is necrosis. My guess is it might be Mn toxicity. And the other pictures, it is difficult to tell but looks like it could be P deficiency.
Whats your temp differential ?
Last edited by ynkessuck247; 01-19-2013 at 10:34 AM.
Hi mate, thanks for your reply! Its weird cause i never gave them extra magnesium. Although, i add 1 tbsp unsulphured molasses (to 1 gallon of water) every watering since i put them in Flo. Im not sure how much magnesium it contains.Originally Posted by ynkessuck247
Temp is 18°C at night and 21°C when light is on.
P deficiency!! Purple leaves yellowing with necrosis on tips... My money's on that!
i meant Manganese Mn
Man my pride and joy is looking EXACTLY like yours. I transferred mine to a new 5 gal bucket with fresh new water and nutes in hopes to stabilize her but I'm super worried something has gone terribly wrong! So you guys are saying just up the nutes a bit?
its kinda confusing pal
its not. it all could be related to Manganese toxicity !! lol
http://www.naturalnews.com/026296_mo...lth_sugar.html
read that and you will see that unsulphured molasses contains high amounts of manganese.
"Manganese, a trace mineral, is very high in content with unsulphured blackstrap molasses. Manganese ions function with a number of enzymes, and are essential to combating unusual free radicals. Like magnesium, manganese also supports cellular absorption of nutrients..."
theres your problem my friend. cut back on every watering, and try applying it every other watering.
wow man u really know whats going on here. Ill cut back with molasses. Thanks a lot mate!
Posting Permissions
Bookmarks