Help week 3 of flower brown spots and yellowing

[BostonGreen]

Plants are just starting week three of flower using ADVANCED NUTS. 1000w light 79degrees 12/12 the light is about 2 feet or more away from plants. I just flushed them out with phd water. What is going on why are they so yellow, and what are these brown spots? I've never had this issue before with dying Leaves and brown apots

Btw all plants are very yellow.. only 2 have the brown spots

 

[The bonger]

Looks to me like cal/mag def. what is the ph? I had the same problem in one of my plants. Ph was at 5 in the runoff. Flush with 2-3 times the amount of soil with water. 5gal pot- 10-15 gals to flush and add calmag when run off ph is at 6.5.

 

[AngryBird]

Quick look in my mind, potassium or magnesium
For some reason my photo gallery will not open..
Look in my signature.. pests and problems..is a photo guide on deficiencies too

 

[Cultivator]

need more details. first what medium are you growing in? And what strength nutes are you feeding and exactly what? what is the ec/ppm of your starting water?

 

[glenski]

 

[1ne eye]

P.H...?

 

[glenski]

5.8

 

[glenski]

Sorry lol I thought I was in my thread Yellow with black spots I already answers most issues that’s a follis up pic it’s getting better

 

[Phytoplankton]

P.H...?

It’s a measurement of how acidic or basic the water is. Too acidic or basic and the plants will not be able to assimilate the nutrients they need. 6.2-6.5 or even a little higher, for soil grows, 5.8 for coco/hydro. You have a little more latitude with soil, because most soils have buffering capability.

 

[KingJohnC]

Hello glenski

This is an old thread from Nov 5, 2016