Is this nutrient burn or deficiency

[longbottom]

just keep watering them with correct ph and ec. the beauty of coco is you can water multiple times per day if needed. In coco just check ec outflow not ph. never water without feed and calmag.

I'll admit that I'm a soil guy and the only coco I've grown in was a mix, Fox Farm Coco Loco

But, if the water going into the coco is 6.1 PH and runoff is 7.8, that's not good !

Anyway, my advice was simply to check PH which a very common problem that can cause deficiencies. In any case, this should give some "clues" as to why his plants are having problems...

I'll head out now and leave this to the coco experts. Good luck OP.

 

[Chrism]

Aslo ensure your ph nd ppm meters aren’t off

I’d recommend a good quality one like blue labs

Me pH pen was miles off bought a decent one now it was saying my water had a pH of 8.5 when really it's 7 had me adding loads pH down when it didn't need it

 

[NairnM16]

Me pH pen was miles off bought a decent one now it was saying my water had a pH of 8.5 when really it's 7 had me adding loads pH down when it didn't need it

It happens to the best of us, I like to calibrate my meters every 6month

 

[Chrism]

It happens to the best of us, I like to calibrate my meters every 6month

This is them now mate do you know why they seem being growing with like claws on new growth and yellow on back of tip of leaf

 

[NairnM16]

This is them now mate do you know why they seem being growing with like claws on new growth and yellow on back of tip of leaf

I wanna say iron deficiency but I could be totally wrong

What are you feeding now?
Do you know ph ppm

 

[Chrism]

I wanna say iron deficiency but I could be totally wrong

What are you feeding now?
Do you know ph ppm

Been feeding 5.8 pH and ppm of 450

 

[Chrism]

Been feeding 5.8 pH and ppm of 450

Canna a and b with calmag

 

[Grownsince95]

I see your temp/rh are 67° with 22% rh. That's where I would start my fix. Environmental factors play a big part in nutrient uptake and delivery.

 

[gwindajoannhare]

Maybe

This is them now mate do you know why they seem being growing with like claws on new growth and yellow on back of tip of leaf

Your humidity is to low

 

[gwindajoannhare]

Maybe

Your humidity is to low

Maybe

 

[Chrism]

I see your temp/rh are 67° with 22% rh. That's where I would start my fix. Environmental factors play a big part in nutrient uptake and delivery.

The temp is 22 and the humidity is 67%

 

[Chrism]

I see your temp/rh are 67° with 22% rh. That's where I would start my fix. Environmental factors play a big part in nutrient uptake and delivery.

The temp is 22 c and the humidity is 67%

 

[NairnM16]

Been feeding 5.8 pH and ppm of 450

Go up to around 6.2 if I’m coco
Go up to 6.5/7 if I’m soil for ph

5.8 works better in hydro and the ph fluxes up nd down between 5.8/6.5

 

[Grownsince95]

The temp is 22 c and the humidity is 67%

Oh shit my mistake! Sorry man I should have just asked. I have the same unit and mine is opposite of yours I guess.

 

[Chrism]

Go up to around 6.2 if I’m coco
Go up to 6.5/7 if I’m soil for ph

5.8 works better in hydro and the ph fluxes up nd down between 5.8/6.5

I've been doing that, but the leaves are dark green at the ends now. do you know what that is mate growth seems slow too apart from big one at back left which is only one that don't have dark green leaves at ends stressful growing bud haha

 

[NairnM16]

Looks to me like a early (n) deficiency
And a (k) deficiency both early,
If you haven’t done so bump your feed up to full strength about 1.4/1.6 ec leaving the head room for flower