Deficiency, lockout or nute burn?

What's good people, looking for some opinions.

Is this... a deficiency, a lockout or nutrient burn?

Only odd couple leafs affected.

Currently week 3 veg.
30l fabric pots - feed every 3-4 days 20% run off.
Lights - Hps/led mixed room.
lights on temps - 25c-27c.
Lights off temps - 20c-22c.
RH - 55%-65%.
Media - ecothrive coco/perlite 70/30.
Nutrients - shogun coco a+b 2ml/l, katana roots, zenzym, silicon, calmag.

Additives inc calmag are at half the recommended dilution rate on the feed chart.

Input PH 5.8-5.9
Run off PH 6.0-6.1
Input EC 1.2-1.4
Run off EC 1.4-1.6

Symptoms have only just started after last feed, re-potted from 5l fabric pots in to 30l fed a half strength feed and looked fine for around 4 days.

Fed them again and Put the feed back to what i was doing before re-potting, (stated above). Since then have noticed couple leaf tips yellowing and some slight yellow patches on some leafs with some tiny rust spots.

Any opinions and info are welcome.
Thanks. Ssf

could be a little stress from the uppot but honestly they look pretty good. my read on the tips like that is bite burn if it isn’t going deep into the leaf but you kinda want a little so you know you are giving her enough too so it’s a fine line kinda. you seem to have the feed about right from what I see. GL

ooof-da said:

could be a little stress from the uppot but honestly they look pretty good. my read on the tips like that is bite burn if it isn’t going deep into the leaf but you kinda want a little so you know you are giving her enough too so it’s a fine line kinda. you seem to have the feed about right from what I see. GL

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Possibly so mate, going to give them a feed with ph'd water and calmag see if that does them any good. Looking to flip them next week, but don't want any problems going in to flower but good shout about stress from uppot I did tease the roots etc when re-potting. Will post an update after this feed. Thanks for your reply

Back off the nutes as your burning them and causing a lock & def aswell by doing so.
Put a pic of your stems, not leaf stems I mean. from the pics you've shown they are lightly purple, so you have some def from this overall toxic levels.

Uppot stress, if even existing (considering you didn't damage the roots and did everything good) won't look like that.

I'd say ph to 6.2 at least
And back off the nutes slowly not completely until you see them recover.
Try to think when this started happening and what was the values back then and try to reach below them in each watering.

DanKiller said:

Back off the nutes as your burning them and causing a lock & def aswell by doing so.
Put a pic of your stems, not leaf stems I mean. from the pics you've shown they are lightly purple, so you have some def from this overall toxic levels.

Uppot stress, if even existing (considering you didn't damage the roots and did everything good) won't look like that.

I'd say ph to 6.2 at least
And back off the nutes slowly not completely until you see them recover.
Try to think when this started happening and what was the values back then and try to reach below them in each watering.

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Thanks for your reply, I will get some pics of the stems today. It started after the uppot, i fed them half strength then back to what they was having before the uppot and that's when it started they are still growing fine just odd couple of affected leafs

Not a coco grower here, but aren't you supposed to feed/water coco every day?

Nobody is going to mention the white specks on the leaves? If your pest control is 'hope', then a little ditomaceous earth proly won't hurt your plant.

weedstoner420 said:

Not a coco grower here, but aren't you supposed to feed/water coco every day?

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Hi mate, thanks for your reply. These have just been up potted from 4l pots to 30l pots so it's been every 4 days as its just roots searching mainly and not taking up the moisture as much. Was feeding them daily previously in the small pots. Just give them a good feed now with just a+b and calmag so see how they perform over next few days.

warble said:

Nobody is going to mention the white specks on the leaves? If your pest control is 'hope', then a little ditomaceous earth proly won't hurt your plant.

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That's just fine perlite and coco debris, I've done my pest prevention and always looking out for things. I've dealt with all kinds of pests before mate, also was first thing I checked for but thanks for your reply dude.