Which deficiency and what to do?

[ocelot]

Hi,

this is my first grow and I made the mistake and started using filtered water few weeks ago and started having yellow leaves not only the older leaves mostly the leaves in the middle and the new leaves looking washed out and Im not sure what to do (Epson salt?) I would like to know for sure before trying to fix the problem.


My Setup:

Homebox ambient q80
Strain skunk #1
200w 4x cree 3950 Led
Compo sana fertilized soil for 12 weeks
2,3(9L) gallon pots
Seaweed Extract
ph: 6.5-7.0
Ec: 320ppm filtered water 192ppm


I water the plants when the pots gets very light and the soil is dry so every 48-72 hours.


I would really appreciate some advice. Today is flowering day 7

 

[ocelot]

 

[ocelot]

Nobody?

 

[Oldbear]

I don't know but this may help:

Cannabis Plant and Pest Problem Solver - Pictorial

 

[Jedthedog]

I would recommend that you flush those plants with some PH ed water then add nutes at 1/2 strength ..