Is thus light burn? Or something elese

[Ph 007]

My plants leaf tips have be foing yellow the last week or 2

I took my plant off calmag so not sure it something to do with calmag or if it's nutrient burn
Or light burn

It's coco, and using canna coco nutrients on 1.2 e.c, ph 5.8-6.0
2 weeks into flower

Looks a bit like light burn to me from pictures I seen online but I'm not sure also if you aren't rust 8 sprayed with calmag last week and it did that think mix was to strong I did it lights out

My lights are in pic below led
They are 55-60cm away from The plants they where running full blast at 240w, I dimmed them down to 150e yesterday don't seem any better really

 

[jguit]

It looks more like a slight nutrient burn. What's your runoff EC? media might be getting a little buildup.

 

[Ph 007]

Not sure I been bitten feeding by hand as the are in auto pot trays, I been hand feeling because the been sick for a while so trying to nurse them better so jot put my auto feed auto pot in, I'm was about to bottom feed now, I'm just making a cupa I'll top Feed and mesure the run off in 5 mins thanks

It looks more like a slight nutrient burn. What's your runoff EC? media might be getting a little buildup.

 

[jguit]

Why would you bottom feed them? That would do nothing for salt buildup. I'd take a sample of your runoff and test the EC.

 

[Ph 007]

Just checked 3 plants
In 1.2 oh 5.9

Out of 3 plants was
Plant 1 out 1.3 ph 5.9
Plant 2 out 0.8 ph 6.3
Plant 3 out 1.4 ph 6.3

Mire pics

 

[Ph 007]

Why would you bottom feed them? That would do nothing for salt buildup. I'd take a sample of your runoff and test the EC.

I use auto pots see the feed from the bottom

I have tried rhizo stands the are drain to wast system and 20 litre pots I had problems done 3 grows with them
I might try then again
I went sure how many times a day yon water them see, i tried once a day twice a day 3 times and 4 and just didn't work well for me

I'd like to use try again and 20 litre pots and water once a day as I don't want smaller pots and to be messing about with watering schedules upping the watering ad the grow just to much fucking about I want it simple as possible see

 

[GNick55]

do as above, though i’m guessing light stress as some leafs are praying.

 

[GNick55]

I use auto pots see the feed from the bottom View attachment 1230018

I have tried rhizo stands the are drain to wast system and 20 litre pots I had problems done 3 grows with them
I might try then again
I went sure how many times a day yon water them see, i tried once a day twice a day 3 times and 4 and just didn't work well for me

I'd like to use try again and 20 litre pots and water once a day as I don't want smaller pots and to be messing about with watering schedules upping the watering ad the grow just to much fucking about I want it simple as possible see

simple/no work-promix hp, organic nutrients..
never ph or anything, just feed/water when needed.

 

[Ph 007]

Just chucked run off on all plants was about same as in 1.2e.c

I'm quite new to led so still trying to figure shit out, the manufacture say Set light 50-70cm away

The are 240w
I have them set about 55cm away
On 240w now , I'm not sure if I should raise to 70cm or stay at 55cm and din the lights down to 150w
any idea guys?

I got a photone app think I need to calibrate and set it up right as when lights whwre on full 240w it said it was 560 ppfd
This is my light

 

[Ph 007]

simple/no work-promix hp, organic nutrients..
never ph or anything, just feed/water when needed.

I'll look I to this on my next grow :)

 

[Ph 007]

If just left them 55cm away from the plants and dimmed them down to 150w see how they look tomorrow if they would look any better by then that is

 

[GNick55]

Just chucked run off on all plants was about same as in 1.2e.c

I'm quite new to led so still trying to figure shit out, the manufacture say Set light 50-70cm away

The are 240w
I have them set about 55cm away
On 240w now , I'm not sure if I should raise to 70cm or stay at 55cm and din the lights down to 150w
any idea guys?

I got a photone app think I need to calibrate and set it up right as when lights whwre on full 240w it said it was 560 ppfd
This is my light
View attachment 1230037

that’s seems close, but i don’t know my LED’s that well.. no idea about ppfd as i just watch plants to see how they are reacting..
you’ll get help soon

 

[GNick55]

If just left them 55cm away from the plants and dimmed them down to 150w see how they look tomorrow if they would look any better by then that is

any changes in a grow will take up to a week to show in results

 

[Ph 007]

I think that my light info, I'm trying to set up my photone app , it's asks for references to calibrate it's something to so with the high and ppfd what the manufacture says I think anyway

 

[Ph 007]

Just calibrated my photone app, now my light set about 50cm away dimmed to 150w days about 560 ppfd

And light on full blast 50cm away is about 810 ppfd

Not sure the settings inuae from chart above is for my light tho, the have changed the add see different light but all the spec seems the same from what I can see ?

 

[Ph 007]

I'm also thinking could it be a iron defficcany ,
I have soft tap water with low e.c 0.2
And I have always used soft water nutrients for my clonner and in soil
But I changed to coco and now use canna coco nutrients
But
I also stopped using soft water nutrients in my clonner and they also yellow on top they never use to with software nutrients for all years of grown for but not using soft water nutrients in my clonner they yellow on top like these are in coco ,
my tap water has no calcium or magnesium in it see and I'm not been adding calmag in this grow in coco

 

[Blastfact]

Thats nutrient burn. Back down on the feeding levels and raise the light to 60cm/24" full power and let it go. Plus those are crazy sativa girls. They can rage and complain like a 13 year old human girl. There going through growing pains and raging hormones.

 

[Ph 007]

Added calmag today because looks like iorn defficcany I think