Is this nutrient lock

[danny357]

Hi have had this girl scout cookies is on the right and is in week four of flower and the others are left in front is harlequin cbd and the furtherest one on the left is not is a question mark they have all had the same feeding schedule this started about three days ago can anyone help please as this is my first time growing thanks in advance.

 

[afghan bob]

Are u talking about the plant on right hand side that is a bit yellow ?
Otherwise a close-up of affected folliage would help

 

[Goonie Goat]

Could be ph lockout or just a bit hungry,
Might have to check that the runoff ph isnt too low.

They don't seem to have burnt tips from what i can see.
Really good effort so far considering that its your first grow, I'd be stoked if my first grow looked half as good as yours

 

[danny357]

Are u talking about the plant on right hand side that is a bit yellow ?
Otherwise a close-up of affected folliage would help

Yes the one on right hand side

 

[danny357]

Could be ph lockout or just a bit hungry,
Might have to check that the runoff ph isnt too low.

They don't seem to have burnt tips from what i can see.
Really good effort so far considering that its your first grow, I'd be stoked if my first grow looked half as good as yours

Thank you but I've had my ups and downs dealing temperature as it gets up to 36°c I have portable air for the tent and a humidifier I went pretty cheap on first run and if works I'll will be up grading the tent and lights

 

[afghan bob]

Mate as mentioned by Goonie, can't see any burnt tips but definitely got some ph zebra marks on outside leaves
Double check ure ph on every change, some plants seem 2 react diff 2 others on their nute take-up so maybe the GSC's need a diff ph
Otherwise it looks hungry
But u going well 4 first go at it

 

[danny357]

Mate as mentioned by Goonie, can't see any burnt tips but definitely got some ph zebra marks on outside leaves
Double check ure ph on every change, some plants seem 2 react diff 2 others on their nute take-up so maybe the GSC's need a diff ph
Otherwise it looks hungry
But u going well 4 first go at it

I did ph check as soon as spotted it and ph was sitting at 6.5 the others were 6.4 would you recommend I treat for nutrient lock and half dose till my nutrient feed and thanks for the compliment.

 

[afghan bob]

First thing u can try is check ure run-off of all 3 plants and see if that one plant differs from others
Going off that result u get a feel 4 what's going on

 

[afghan bob]

That will give others on here more of an idea 2 help u out.....[others meaning more talented than me]
Dont forget 2 measure what going in to what's coming out
Come back on here with results and i'm sure u'll get a response

 

[danny357]

Ok will do tomorrow evening

 

[snapper]

What medium are you using ?

 

[danny357]

I'm using turbo dirt with all root roids
They have been doing very well until 4 days ago ph has been good 6.4 and ec has 1100 and run off 650 ppm other two are 790 ppm ph 6.5.
The has never been over 7

 

[danny357]

The other two are fine gsw is problem and others show no shines of anything

 

[MM2K6]

Thank you but I've had my ups and downs dealing temperature as it gets up to 36°c I have portable air for the tent and a humidifier I went pretty cheap on first run and if works I'll will be up grading the tent and lights

Shit mate 36c they look ok to me, they should be toasted must be 28c or under

 

[danny357]

Shit mate 36c they look ok to me, they should be toasted must be 28c or under

Thankfully it became a bit cooler now
We only get two weeks of cold we have been lucky it got down to 16°c in shed
The temperature outside the gets up to 36 outside the tent still until the sun has gone in the wet seson 35 with 80+ humidity

 

[Johnny Walker]

The other two are fine gsw is problem and others show no shines of anything

It's hungry. It's used the soils nutrients so you'll have to feed it or it will feed itself with its leaves starting with fans as its doing now.
Just feed it till the end any decent fertiliser will do.

 

[afghan bob]

Are u ph before u add microbes ?
I've noticed it goes through the roof after rootroids

 

[danny357]

Are u ph before u add microbes ?
I've noticed it goes through the roof after rootroids

Yes always ph before watering in the nutrients

 

[afghan bob]

Sorry mate, never grown in soil, so not much good 4 u
Have used rootroids ect and actually had 2 change out seedlings because of nute uptake

 

[danny357]

No they've done very well with root roids and there other products and just this one hiccup but I have been feeding a bit lighter then what packet says as I didn't want to over feed and now a adjusted bit more