Dying plant help

[Hugrem]

This is an autoflower in coco , using gh flora trio and calimagic , here what im giving them at week 7 ( 2,5ml micro , 1,25ml grow and 3ml bloom) and calmag at 2,5ml , this is for a gallon, water phd at 6,2 (600-700ppm) , run off 5,8 ppm 700. Is this overfeeding or lightburn ?? Its in a 2x4 groe tent using 2x 400w cob roleadro

 

[3rd Monkey]

Lightburn. Buds are burning white. How close is the light?

 

[Hugrem]

Lightburn. Buds are burning white. How close is the light?

buds are not white ??? and light is at 20-22inch above highest top.

 

[Hugrem]

This is from yesterday

 

[3rd Monkey]

Must be this device then. They look white in that first pic from where I'm sitting.

 

[3rd Monkey]

buds are not white ??? and light is at 20-22inch above highest top.

@hotrodharley

 

[Beachwalker]

Not overfeeding. I don't use coco but your pH seems a little high, I would drop it to 6.0, maybe some cocoa Growers could comment, good luck

 

[onegreenthumb]

Not overfeeding. I don't use coco but your pH seems a little high, I would drop it to 6.0, maybe some cocoa Growers could comment, good luck

agreed looks like deficiency issue from ph problem high would also be my guess calcium

 

[Hugrem]

Not overfeeding. I don't use coco but your pH seems a little high, I would drop it to 6.0, maybe some cocoa Growers could comment, good luck

I tried feeding at 5.7 and think have gotten worse in the last few days , run off was at 5.1 so I kept feeding at 6.3 and now runoff is back to 5.8-5.9

 

[3rd Monkey]

It's going in at 6.2 and out at 5.8. That's in spec.

 

[3rd Monkey]

What's your base water? Ppm?

 

[Hugrem]

What's your base water? Ppm?

tap water 65-80 ppm base

 

[onegreenthumb]

what make is your ph meter?

 

[Hugrem]

what make is your ph meter?

Im using cheap amazon meter , I have the yellow one wich everybody with no budget get haha and another blue one I paid 30$ , both same reading. Calibrated every week , and there is barely any fluctuation.

 

[Joint Monster]

Imo. I would do 2ml Grow / 5ml Micro / 10ml Bloom
And 3-5ml CalMag.

PH'd to 6.8 and PPM to 600ish

I'm thinking Cal-Mag Deficiency. But also possibly Potassium Deficiency (which would make sense because your Blood feed is a little low imo.).

 

[Hugrem]

Imo. I would do 2ml Grow / 5ml Micro / 10ml Bloom
And 5ml CalMag.

PH'd to 6.8 and PPM to 600ish

At 10ml bloom its gonna kill my plant ??? Im using gh flora trio autoflower charts and it says at week 8 I am supposed to be at 5ml bloom thats the highest it get ... And ph 6.8 in coco isnt that way way to high ?

 

[onegreenthumb]

that is your issue speaking from experience my cheap one from amazon tested good at 7 and 4 but was misreading I got frustrated and bought an apera and found out that meter was keeping my ph above 6.5 but was reading 5.7 it was crazy because it test good at 7 and 4

 

[Joint Monster]

This Stuff Right?

2-5-10 is Perfectly Fine. Just adjust your PPM before feed.

^BUT...... B.U.T...... that stuff is for Soil/Hydro.

I've not used it in Coco, but they have a special Coco nutrient Formula. Coco is known to hold onto and release certain nutrients later. This could be your problem.

 

[3rd Monkey]

tap water 65-80 ppm base

That checks out too.

Sounds like you have your shit together, also why I think light burn.

Just in case... How often do you water to runoff?

 

[Hugrem]

That checks out too.

Sounds like you have your shit together, also why I think light burn.

Just in case... How often do you water to runoff?

everydays with 10-20% runoff