I think this is N deficiency

I have two c99s. Both show the first set of true leaves going pale yellow. This has been going on for several days. I've had some root problems with her sister so I had let both of them get droopy dry before watering yesterday. Nutes were 1/16 strength. I like to build up slowly but I guess I need to ramp up the dosage.

FF OF 30% perlite. Dolomite lime & Azomite added.

Effectively no nutes till this last watering.

FN veg nutes 1/16th
AN tarantual,piranha pinch
AN Voodoo full strength
Karma full strength
Molasses 1/2 tbs / gal

Growing under CFLs

I also did a foliar spray with the same mix but no molasses.

I'd appreciate any advice

she does not look to bad at all. 1st thingi would do is to ensure i was giving food and water at the proper PH.
does you soil that it is in have any nutes in it already, and what nutes are you using and when did you 1st add them.

Tx for the comments mcpurple.

I really should have given the info you asked for so I will add it to the OP.

I haven't checked ph recently. But this is the same soil mix and feed mix I've been using on other plants, at different strengths of course. I used distilled water.

Perhaps transplanting them would be a good idea. The next pot will have a layer of SuperSoil. This will supply nutes and perhaps stabilize the ph

the FFOF soil should have nutes in it already. it seems to me you are feeding them alot of a few things early on. im not to sure what exactly voodo,tarantula, and karma are but when in veg they dont require much IMO, i always just gave a veg nute with some micros added every now and them. this is what i would do, give a 1/8 of the recommended does of veg nutes, check ph to ensure it is correct and see what happens.

voodoo, tarantula & piranha are micro organism supplements. They are meant to be applied as a suite. the molasses was for the little guys to eat. Karma is a root growth promoter. Both the AN stuff & the Karma are there for root health. One C99 got stretchy and then a fungus on the very base of her stem. This helped.

The FN Veg is just a standard N heavy nute.

Your giving it to much love, do you check the ppm?
All them nutes sound likes a lot
FFoF as plenty nutes to begin with!

Most of that is NOT nutes. It's soil amendments. The actual nutes were just FN veg at 1/16 strength and molassess at half strength.

But that was yesterday's watering. The problem developed before then and they had been on water with maybe one drop of N nutes

give her a lil more nutes man, i think she will thank you

I might be off the wall but I wanna throw this out there because I thought the soil looked a little wet and OP said he had a fungus which makes me think it's a little over watered. Won't hurt anyway just to let it dry out a little and please don't transplant now. It's already struggling.

dannyboy602 said:

I might be off the wall but I wanna throw this out there because I thought the soil looked a little wet and OP said he had a fungus which makes me think it's a little over watered. Won't hurt anyway just to let it dry out a little and please don't transplant now. It's already struggling.

Click to expand...

i was kinda thinking the same thing although he did say he let it dry out a bit before the last watering

Again, thanks for all the comments and tips. I appreciate it.

I don't think overwatering is the issue: I am fairly careful about that. On the last watering I waited until they were really drooping, really really drooping - about 4 days. The pix show her just after watering.

Her sister developed a stem base fungus problem and fell over. I propped her up for a week keeping her as dry as I dared and only squirting a strong solution of h202 & root stimulant around the base of the stem. This last was the first real watering she has had in sometime. She seems to have completely recovered. The brown slime is gone. The base of the stem has thickened and looks a healthy green.

FF OF has nutes although these have been in the same pots for at least a couple of weeks. Also, this is a light mix being 1/3 perlite. Until this last watering I had been putting one or two drops of FN veg in 1 qt of water. This last feeding they got 1/16th strength veg nutes.

This problem of yellow leaves appeared before the last watering while the plants were dry.

give her a lil more nutes man, i think she will thank you
​

Click to expand...

This is my thinking. I just want to be careful. If it's not an N problem, ramping up the nutes might make it worse.

... please don't transplant now. It's already struggling.
​

Click to expand...

Apart from the yellow leaves, does the plant look like she is in distress?

I've had N deficiencies before. I tend to underfeed in the early stages so I see it sometimes but never quite this early. It's only the first two true leaves. In fact the new growth at the nodes where those leaves join is dark green.

Perhaps the little bit of N in the last feed helped?

Perhaps the extended dryness caused an N deficiency?

Perhaps it's something else ?

Transplanting is a risk because of the shock. But it's also a safer way to rebalance the nutes & ph by adding more soil to her environment.

I dunno. If I ignore it, it wont be good for the plant. If I do the wrong thing that will not be good either. Unless I get some other idea, I think I will do the 1/2 strength N tomorrow.

My thinking is to water again tomorrow with a little less than 1/2 strength nutes.

Again, I appreciate the time and thought people have given me. If it seems like I am arguing, it's not because I am being a smartass, I just need to make sure that I understand what's going on before I do something to these girls. I'm not trying to give anyone a hard time. Just want to figure it out.


Update:

Well this one got thirsty and started drooping. I gave her a drink with 1/2 strength veg Nutes. If she doesnt die, I will do the same to her sister.

It seems that this seedling is drinking itself dry very fast. Perhaps she is root bound and that is causing deficiency symptoms. I dont see any roots poking out the bottom. I was going to transplant them soon but like someone said, I would rather wait till they are in best health before putting them through that shock.

Ok veg nutes seemed to do the trick. The yellow has stopped progressing. The lower leaves are still yellow but the next set seems to have turned a darker green. On her sister, who didn't get any nutes, the second leaves are yellowing and getting worse by the day.

give her a lil more nutes man, i think she will thank you​

Click to expand...

mcpurple was on the money.

I am going to transplant them into larger pots with subcool's Super Soil. That ought to provide plenty of N.

Thank you everyone for your help and ideas.

Looks ok leaves turning yellow means it is taken uo N-however do not over water-this will do the same thing to the plant-too much water roots can't breath and develope right.

1/16 strength?... underfed. Quick way to green her up would be to foliar feed with a veg food.