Whats wrong and how to fix ?

Hi, I did have my plants in mini tent first, now they been putted to bigger tents with constant flow of water..
as been working great with same setup.
Before they where in just rockwool cubes and feeded manually.
At the time the EC where 1.0 (my water is 0.2 without nutes, so I give the total number shown on the meter)
After the transition I added nutes to EC value of 1.2..
They looked ok but not great grow slowly with some yellowing in the new growth,,,,so I thought maybe too much
strength in my reservoir EC value , so I pumped some fluid off and added just water to get EC 0.9...
they didn't really look better so I emptied the reservoir and adde only PH'ed water waited 24 hours and read online more info...and came to the conclution that it maybe wasn't over feeding just Iron deficiency and lights too close....
the plants are in net pots and roots hanging in the container..I checked the roots and discovered that they haven't grown much at all , I could bearly see a tip here and maybe a tip there coming out of the rocwool...
I foliar fed them with Iron 1ml/Liter spray...checked them for some time and decided to add base nutes back to EC 0.9 (because I dont think it was a lock out of over feeding in a first place anyway...)
Maybe I am super wrong about it all,,,and it would be nice to get some serious expert advice here,,,thank you !

P.S. you see there is group 1 and group 2
The group 2 has clearly the inner new growth yellowing leaves and the group 1 lesser of the same symptoms.
They are all exactly the same strain Moby Dick feminized and from same conditions.

Pics?

There you go, sorry the order is a bit out..but the ones with yellow leaves are group 2 .
Ou shitt the pics shrunk down to nothing when I copied an cleaned the meta data from them accidentally...I have to take new ones again tomorrow..and make sure the copies are big ones
before I clean them...

Do you have any pics the we can actually see?

Something around the 1-5mb size? Those are under 5 kb and are useless

You're really making us work to get some in info here...

And it looks like your freaking out and recklessly gardening.
First, calm down..
Iron is uncommon with store bought nuts. What nuts are you running?
What's the pH?

yeah, pix are crap. too small.

yellowing is almost always N defic. how's your pH?
skip the foliar feeding. they are big enough to meet all their needs thru the roots. mother nature doesn't spray nutes on plants every time it rains.

Phytium hater said:

lights too close....
the plants are in net pots and roots hanging in the container..I checked the roots and discovered that they haven't grown much at all , I could bearly see a tip here and maybe a tip there coming out of the rocwool...

Click to expand...

Hmmmmmmm

Sorry, I didn't have time to take new ones until now.
The nutes are Canna Coco A+B , I have used them before in exact same setup with great results.
(even I am growing in hydro)
The nutes are greatly balanced and shouldn't cause any disbalance, (haven't caused before)
I have Blue Lab Guardian perfectly calibrated PH and EC meter, can't really find anything more expensive than that easily.
The foliar is handy way for fixing something when you are not sure is it the correct element or not you are adding...other vise you will be emptying your reservoir and throwing everything away.

Its a lot easier to fix if you dont do a crapload of stuff to your ladies before asking for help. It exacerbates the problem 10 fold.

I see PK toxicity.
Maybe a little light on Sulfur, not sure with how Canna Coco acts with hydro.
I don't use Canna Coco, but if you've used before with good results...
Are you sure your guardians calibration is right (that it didn't dry out)? pH might have been the problem.

Thanks, I will re calibrate and check the meter...I'll get back with results..

Meter where a bit off...the new reservoir solution I just made yesterday was 5.4 ph,
I am not sure how much the previous mixture was off which I changed when I was in believe of over ferting...
Now adjusted for 5.8 ph

Just remember, she's received a lot of stress and shock lately. It's gonna take some time to recover, if fixed.

I think 1 reason also has been also my T-5 lights with 8 tubes I kept really close...now after yesterday when I moved them 45 cm distance from the tops they look better....the roots haven't grown bearly at all...I wonder should I use timer for on and off watering.
Usually in this hydro system where roots are hanging (whell as soon as they appear out from the big rockwool cubes/hydro clay ball/net pots) I have always just used constant flow...because if hanging roots get to dry at all they die..

Nothing is fixed..leaves drooping and plants not looking well....so please does anybody grow here and want to share some knowledge...
Now I have putted a timer for 15 min. on and 30 min. off...
Also did a cal/mag foliar feed.....
Rember I haven't done anything radical...the plants where well before trans planted and the EC was around the same strenght..
I have emptied the tank all ready once...next if no sign of improvement I will increase the water off time ,,,the roots might be suffocating..since roots haven't grown out from the hanging net pot they might be lacking oxygen..(yes I have 8 air stones per tank)
Look at the pictures and give a knowledgeable diagnose doctors please or the patient is gone..

...and these bitches are quite fotogenic...or they they have gone worse since last time i took pics earlier today..by bare eye they look worse...small and wery droopy leaves with new and now a lots of the top grow completely yellow....is it serious lack of oxygen did i start too early with constant flow of water...the drippers are not dripping they are pooring even on low setting...maybe i should go back to smaller pump like in last grow...it is just a risk to get the 600l/hour small pump on low setting , it cause easily one or too of drippers of 10 to stop dripping at all...so now in this grow i have 1000l/hour on lowest setting...

Ok so how exactly are your plants that big and the roots aren't even poking out of the rockwool yet??? You should have sizable roots at that size of a plant - how big are you rockwool cubes??? Also rockwool shouldn't be saturated, but it should be kept moist - if you don't have hydroton below/around the rockwool it is likely too wet - more if you are dripping/ running water in from above constantly.. you don't even need to do that in DWC.. this is why I hate rockwool it's finnicky and can be way too easily mis-handled..

Do you have an airpump running in your res?? Are you using airstones or just like straight air lines - airstones can clog easily so make sure you have lots of bubbles...

I also agree, drop the nutes to like 1/4 or 1/2 strength for early veg stage - your plant will be fine with minimal nutes, but it needs to get healthy first..

Please understand recovery time is sometimes more than 24 hours.

"P" "K" toxicity...

By adding Cal/Mg you'll give it Cal/Mg toxicity as well. Too much PK locks out Cal/Mg/Fe. That doesn't mean they're not present in the system.

So, of course the plants are out from rockwool cubes, already before i put them in netpots with hydroton clay balls.
But if i lift the net pots up I should see long hangy roots like you said "size of the plant"..which is not what i am seeing. Instead I see couple of shy ends poking out less than half inch from bottom of the small netpots ..so the distance from rockwool cube bottom must be only 2 inch.....the roots should be much longer than they are now.
The thing what have instantly made them looking better was to remove the 8 tube t-5 light and start using the 2x600w hps lights.
The lights are up in the sealing no where close...but the plants have started to change color and look a bit better now....not that
I am not cracking the champange quite yet but...something a bit more positive is going on....
The only downside is that I have to shift them to 12/12 this weekend because house inspection is on the way...fuck !

Find a safe place to keep them. Growing shouldnt be rushed.