Cud my Light be too close ?

Jonnypierce · Dec 17, 2022

Hi everyone I've currently got 5 green gelatos grown from seed In coco I'm currently 14days into flower and some of the tops of my plants seem abit off to me like really bright yellow as you can see in the pics, my question is do you think this cud be light damage from lights been too close ? I've got 2 660 w hps lights In there and an iongrid t24 250w led in there on 100 % led is 18 inch above and hps have been 14 inch above thankyou for any advice ps my room is 1.2 x1.2 x 2 m

2Bad · Dec 17, 2022

I’d say yea

Jonnypierce · Dec 17, 2022

2Bad said:
I’d say yea

Thought so pal I moved them all up a couple of inches just to be safe l, thankyou

Aqua Man · Dec 18, 2022

Look like a micro deficiency… see the color is fading from the middle out? Light bleaching does the opposite.

id say its and iron deficiency and the likely cause would be PH to high in the media

what nutrients are you using?

what ph adjusters are you using?

how often and hiw much are you watering

Jonnypierce · Dec 18, 2022

Aqua Man said:
Look like a micro deficiency… see the color is fading from the middle out? Light bleaching does the opposite.

id say its and iron deficiency and the likely cause would be PH to high in the media

what nutrients are you using?

what ph adjusters are you using?

how often and hiw much are you watering

Hiya pal I'm just using sumo a + b , sumo boost, rhizotonic and calmag 1.3 ec I've not been adjusting the ph or even checking my ph coz my ph pen broke weeks ago and everything seemed dialled in and I've not changed anything nutrient wise since then, as for the watering I'm just feeding once daily as soon as the lights come on I'm feeding till I get decent runoff which is taking 3 ltrs now

Moshmen · Dec 18, 2022

Jonnypierce said:
Hiya pal I'm just using sumo a + b , sumo boost, rhizotonic and calmag 1.3 ec I've not been adjusting the ph or even checking my ph coz my ph pen broke weeks ago and everything seemed dialled in and I've not changed anything nutrient wise since then, as for the watering I'm just feeding once daily as soon as the lights come on I'm feeding till I get decent runoff which is taking 3 ltrs now

Aqua is ur man he will be back but sure sounds like ur getting to much dry back , need to increase fertigations would be my first thought ? Am I close ?

Aqua Man · Dec 18, 2022

Jonnypierce said:
Hiya pal I'm just using sumo a + b , sumo boost, rhizotonic and calmag 1.3 ec I've not been adjusting the ph or even checking my ph coz my ph pen broke weeks ago and everything seemed dialled in and I've not changed anything nutrient wise since then, as for the watering I'm just feeding once daily as soon as the lights come on I'm feeding till I get decent runoff which is taking 3 ltrs now

Yeah bro id say the PH is the issue… you may need to feed more often but im all but certain your runoff ph and ph in the rootzone is going to be to high

Aqua Man · Dec 18, 2022

Next feed run 2-3x the pot volume through to help reset. If you can its really important to get a new PH pen. Coco is not so forgiving with PH as it contains no buffers

Jonnypierce · Dec 18, 2022

Aqua Man said:
Next feed run 2-3x the pot volume through to help reset. If you can its really important to get a new PH pen. Coco is not so forgiving with PH as it contains no buffers

Okay bro thankyou

Jonnypierce · Dec 18, 2022

Jonnypierce said:
Okay bro thankyou

Hi aqua man so the ph pen I thought wasn't working actually is working so I've been and collected the run off from 2 plants the main offenders and these are the readings I'm getting

Jonnypierce · Dec 18, 2022

Jonnypierce said:
Hi aqua man so the ph pen I thought wasn't working actually is working so I've been and collected the run off from 2 plants the main offenders and these are the readings I'm getting

Normal tap water

Jonnypierce · Dec 18, 2022

Jonnypierce said:
Normal tap water

Would this be causing the issue ? I know 7 is slightly high but wud it cause this ?

Moshmen · Dec 18, 2022

Jonnypierce said:
Would this be causing the issue ? I know 7 is slightly high but wud it cause this ?

Again not a coco guy but I’m pretty sure you should be shooting closer to the 5.8/6 range

Aqua Man · Dec 18, 2022

Jonnypierce said:
Would this be causing the issue ? I know 7 is slightly high but wud it cause this ?

Yea it would

Aqua Man · Dec 18, 2022

Moshmen said:
Again not a coco guy but I’m pretty sure you should be shooting closer to the 5.8/6 range

Yup this ^^^ id expect to see it in anything over 6.5

Jonnypierce · Dec 18, 2022

Aqua Man said:
Yup this ^^^ id expect to see it in anything over 6.5

Thankyou for your advice much appreciated next feed I'll shoot for the 5.8/6 range

Jonnypierce · Dec 18, 2022

Moshmen said:
Again not a coco guy but I’m pretty sure you should be shooting closer to the 5.8/6 range

Thankyou for your input bro it's much appreciated next feed I'll get the ph down

DaKine808 · Dec 18, 2022

Are they air cooled hoods? That doesnt seem too close to me.

Ph in coco adjust every time you water to 5.8 and keep it there. What is your ec? You could also be pushing too much K thats causing P lockout.

Jonnypierce · Dec 18, 2022

DaKine808 said:
Are they air cooled hoods? That doesnt seem too close to me.

Ph in coco adjust every time you water to 5.8 and keep it there. What is your ec? You could also be pushing too much K thats causing P lockout.

Ec is 1.3 qnd no the6 aren't air cooled just the cheap arse ones bro

WrappedUp · Dec 18, 2022

+1 on Ph iron deficiency

I grow in Hydroton, sometimes 60/40 Coco
I’ve ran a ‘un Ph’d’ crop in the past. Had the exact same issue.
Also had problems with Sulfur.

Cud my Light be too close ?

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