New Growth Yellowing, With Pics

Good evening RIU. I am growing some girl scout cookies clones and am having a blotching/yellowing problem on the new growth. I received and transplanted the new clones a week and a half ago (they were a normal healthy green) and they have since doubled in height. I have them about 15" under a 400w cmh. I have been growing a couple years now and this is my normal process, however I have not had this problem before. I am in 50/50 coco perlite, using ro water and mixed to 5.8 ph. Temp is around 75 and 40% rh, probably 10 degrees cooler with lights off. Here are my nutes per gallon, in order of mixing:

magi-cal, 5 ml
pro-tekt 2.5 ml
rapid start 1 ml
orca 1 ml
heavy 16 prime 5 ml
botanicare pure blend pro grow 15 ml
sea green 1 ml

The guy I got them from said he sprayed them with organicide and a little floramite before he gave them to me (I wish he hadn't). I have sprayed them with compost tea, superthrive, and a little pbp grow (at different times). I would appreciate any further advice, as I'm not sure where to go from here.

The Red in the stem's could be a sign of nitrogen deficiency. or a Phosphorus deficiency.
I would see what my growing mediums pH is and go from there.



Good Luck on Your Grow.

topfuel29 said:

The Red in the stem's could be a sign of nitrogen deficiency. or a Phosphorus deficiency.
I would see what my growing mediums pH is and go from there.

Good Luck on Your Grow.

Click to expand...

Thank you, I figured it's a nitrogen deficiency but I just don't understand how being that the lower leaves aren't affected and I have increased the pbp grow.

Yea best thing to do is just flush the plant and lower the amount of nitrogen in your plants diet. You should be fine m8, Happy growing !!

Looks like the pesticides hurt them by stunting old growth. I think your overwatering and it's compounding to the old pesticide damage. Lay off watering too frequently and everything should be fine.