To much or Deficency?

High Guys
I am trying myself on a 1m2 organic soil grow for the first time with 2 Green Crack Punch lady's which usually finish in around 67 days.
Today is day 34 and they start to look a bit yellow.
Room temp 27°C
RH 58%
315w CMH Lamp
39l Softpots with Biobizz light mix+ 4 Biotabs and a few Guano Tabs
And watered with 0.3 EC when the pots became light.
I was away for a few days and a friend took care of them and might watered a bit to often...

My big question is what do you think is going on. Are they craving more fertilizer or is it more likely to be a bit to much for them with the Biotabs?
I have some liquid organic and the General Hydroponics Trio here and would love if you could help me out before it's to late...

Best wishes
N

Judging solely from the leaf symptoms, it looks like deficiency, underfertilization. Not familiar with your nutes, I presume those tabs only last so long. You might want to tell us when you placed the tabs. Good luck.

Most likely deficiency. Post a couple of pics that are closer. Including the faded leaves.

I placed them like 45 days ago and they were advertised to last for a whole grow but well could be marketing...
I'll post a picture in a few minutes.
What kind of fertilization would you recommend?organic or mineral fertiliser?
Mineral would solve the problem a bit quicker I guess?
Which EC? 1.4? Starting from 0.3 so 1.1 fertilizer?
Thank you guys

Here you go

They’re hungry. But, it looks great. Too late too fix it now really. You can’t green up those pale leaves.

Give them some food. GH trio 6/9.

What do you mean with 6/9
6ml micro 9ml bloom? For 10l?

0.3 EC is pretty low for flowering. I would go for 1.5-2 EC

Here is little information i am following. If you see any excess feeding you can cut or if you see def you can give more.

• Growth: during the first weeks it should be between 0.800 – 0.900 mS, and you’ll have to increase it to 1.100 – 1.200 mS as the growth period goes on.
• Bloom: start off with 1.200 – 1.300 mS, increasing it weekly until 1.900 – 2.000 mS. During the last coupe of weeks or 10 days you’ll need to use just water with a 0.000 – 0.400 mS EC to flush the plant.

6/9 per gallon

Do you fertilize with every watering?
Sorry i am from Germany and not used to calculate with gallon
I actually wanted to stick to an organic fertilizer but mineral seem to to a better job because the yellowing stopped now.

With 6/9 you are talking about micro and bloom and you do not use any grow?

I was told to use the organic fertilizer only every second watering but with mineral everytime.
I don't want to slide into an overferlisation.
I am planing to reuse the soil after the grow. Is this possible with mineral fertiliser?

Cocktrauma said:

...
Sorry i am from Germany and not used to calculate with gallon
...

Click to expand...

4L * 95% ≈ 1 US gallon. For a more accurate conversion, use Google calculator.

I do not use the grow. I fertilize every time, but I grow in coco.
If you’re growing in soil, do not feed every time.