Deficiency, but is it iron? sulfur? something else?

HollyD

HollyD

Well-Known Member
This is an NYC Diesel plant, ten days past the flip. All the new growth is a pale green.
Growing in a 4-gallon coco hempy bucket, under LED (two Hans panels, recently flipped to Flower mode.)
Feed has been Jack's 16-4-17 throughout veg, but I switched to their 10-30-20 flowering formula this week, both because of flowers and because the older leaves are dark and a little twisted/clawed so I thought it would be good to back off the nitrogen a little bit.

I've been operating under the theory that iron is deficient because the pH was too high. So I've been feeding and adjusting the pH to lower than usual. Just now I fed with a pH of 5.2 and checked the runoff which was 6.5.

Does it sound like I'm on the right track? It's only been a couple of days so I haven't really given it a chance to see if things normalize.
 

Attachments

Hotboxbudz

Hotboxbudz

Well-Known Member
HollyD said:
This is an NYC Diesel plant, ten days past the flip. All the new growth is a pale green.
Growing in a 4-gallon coco hempy bucket, under LED (two Hans panels, recently flipped to Flower mode.)
Feed has been Jack's 16-4-17 throughout veg, but I switched to their 10-30-20 flowering formula this week, both because of flowers and because the older leaves are dark and a little twisted/clawed so I thought it would be good to back off the nitrogen a little bit.

I've been operating under the theory that iron is deficient because the pH was too high. So I've been feeding and adjusting the pH to lower than usual. Just now I fed with a pH of 5.2 and checked the runoff which was 6.5.

Does it sound like I'm on the right track? It's only been a couple of days so I haven't really given it a chance to see if things normalize.
Click to expand...
From what I can see in your pic, doesn't look like a problem. New/young growth is always a lighter green.
 
HollyD

HollyD

Well-Known Member
It looks really yellow and light under the LEDs, so maybe I'm over-worrying. I'll keep calm and keep an eye on it, thank you!
 
Hotboxbudz

Hotboxbudz

Well-Known Member
HollyD said:
It looks really yellow and light under the LEDs, so maybe I'm over-worrying. I'll keep calm and keep an eye on it, thank you!
Click to expand...
If your really worried about it. Take a few more pics with better lighting. Post them and ill take another look and see if anything looks off.
 
HollyD

HollyD

Well-Known Member
Here are a couple more, with and without flash. You can see the twisting of the older leaves, and the yellowy-green color of the new growth.

Oh! I didn't mention above that I also give them epsom salts and calcium nitrate, because they're growing in coco coir. Just in case that matters.
 

Attachments

420PyRoS

420PyRoS

Well-Known Member
Nothing wrong with it at all. She looks healthy as an ox and is growing normal.

PS, those are all nice bud sites. Congrats
 
Alienwidow

Alienwidow

Well-Known Member
Looks a little stretchy to me, high heat in there? Low light? Light too far away? I was thinking broad mites cause the new growth is really skinny but theres no twisting. Other than that it looks green.
 
Alienwidow

Alienwidow

Well-Known Member
Wait i do see a little twisting now. Look into broad mites and try to eliminate that as a problem before you keep searching.
 
Jumfrey13

Jumfrey13

Active Member
Mine is definitely not mites but Ive narrowed it down to an iron deficiency. You see, i was gettting a new panel installed and had to put the plants outside. Yellowing at the bud sites, perfect green everywhere else. I bought some seaweed plus iron and i'm going to foliar feed right before the lights go off in the morning and we will see if the iron helps things a bit.
 
You must log in or register to reply here.
Top