Is this a deficiency of some kind?

[benjones]

Hi all . Some of my plants have this yellowing the the edge of some of the leaves . Could it be a deficiency or possibly light burn ?

Thanks

 

[benjones]

Here is a pic

 

[benjones]

I am having problems posting a photo

Sorry

 

[Happyreefing]

Here is a pic

Pic didn’t show try again

 

[benjones]

Pic didn’t show try again

thanks ,i will try again . for some reason i don't get the option to upload the photo to the post

 

[Happyreefing]

thanks ,i will try again . for some reason i don't get the option to upload the photo to the post

Try taking the photo directly in the site maybe not use an existing gallery photo ifffff possible

 

[benjones]

 

[GNick55]

what you feeding and how much?
might as well post full pictures of grow area..
kind of lights/distance?
growing medium?

 

[benjones]

Try taking the photo directly in the site maybe not use an existing gallery photo ifffff possible

thanks. i managed to do it

 

[benjones]

hi @GNick55

it takes about 6 minutes to upload 1 photo, but i have a thread here that has more photos

https://www.thcfarmer.com/threads/are-these-ready-to-flip.143960/page-7#post-2892690

i am using coco . i am just into the 8th week of flowering . i feed every 2 days . 5 gallon fabric pots
ph 5.9 - 6
EC 1.6
tap water 0.2
cal mag 0.1 - 0.2
mega crop a and b 1.0 - 1.1
epsom salts 0.1/0.2
fulvic acid 1ml liter
1.6 EC altogether

lights are on 85% , mars hydro fce 4800
between 10 and 16 inches away from the tops

 

[GreenGalaxyFarm]

View attachment 1314112

looks like potassium def no?

 

[GNick55]

hi @GNick55

it takes about 6 minutes to upload 1 photo, but i have a thread here that has more photos

https://www.thcfarmer.com/threads/are-these-ready-to-flip.143960/page-7#post-2892690

i am using coco . i am just into the 8th week of flowering . i feed every 2 days . 5 gallon fabric pots
ph 5.9 - 6
EC 1.6
tap water 0.2
cal mag 0.1 - 0.2
mega crop a and b 1.0 - 1.1
epsom salts 0.1/0.2
fulvic acid 1ml liter
1.6 EC altogether

lights are on 85% , mars hydro fce 4800
between 10 and 16 inches away from the tops

ok well i’ll have to tap out.. i’m not a coco grower, but we have the best coco growers here that will help you out.. just take your time and wait to get a few replies before getting to your plants

 

[benjones]

looks like potassium def no?

if it is , i have mono potassium phosphate 0-52-34 and a packet of potassium sulfate 0-0-50

which one should i use and how much per gallon ?

 

[GreenGalaxyFarm]

if it is , i have mono potassium phosphate 0-52-34 and a packet of potassium sulfate 0-0-50

which one should i use and how much per gallon ?

i would follow labels instructions

 

[benjones]

i would follow labels instructions

the packets i bought are not from aa grow shop and they don't have a dosage on them

i'll have a read around and see what i can find

 

[Happyreefing]

By chance are you running any supplemental UVB light ? Also what they said some of the best coco guys around here I’m sure you will find your answer real soon , don’t try anything until you have some peeps agreeing on a main idea , IMO

 

[benjones]

By chance are you running any supplemental UVB light ? Also what they said some of the best coco guys around here I’m sure you will find your answer real soon , don’t try anything until you have some peeps agreeing on a main idea , IMO

i'm not using any UVB lighting .

luckily i think i only have 2 weeks or so left so hopefully not too much damage has been done . it's not on all of the plants but some that are furthest away from the light has it so i wasn't sure if it was a light issue or a feeding one. i will get more pictures tomorrow .

thanks to everyone for replying. i have to go to bed now as it's 11:30 here and i have to be up at 5:45 so apologies if i don't reply to a post