I always get this problem around week 4

[leo_bulero]

Hello farmers, I am writing this post because I am consistently getting the same problem around week four of autos, right when flowering starts, see the pictures.

Now judging by the color it seems like a nutrient deficiency but... am I right?

I use Biobizz Light Mix soil and in the first three weeks I use Root Juice and Rhino Skin (for silica), then I start adding a little Bio Grow. Should I start earlier with Bio grow?

Here is the diary https://growdiaries.com/diaries/292686-grow-journal-by-leo-bulero (but I have not posted these pics yet there, this happened over the last 5 days)

Thanks for your time

 

[JIMKSI64]

Sure we can help.
Biobizz light mix is an organic soil that is going to run out of nutrition about ....
Week 4.
Root juice is an inoculant to promote roots and silica should not be used so early.
I see no nutrition in your adds until recently. Light mix is all organic and is not a living soil it will trend down in nutrients until used up. Yes you need the biogrow in week 2 to be ready for week 4.
So now we know we need nutrition support. The problem is if you maintain the organic nature or the grow it will take 10 days to make an effect and I do not think you have the time.
I do not normally recommend changing to chemical ferts mid grow but if you had a bag of Jack a and b and some Epsom salts the recovery would start today.
If you start dumping biogrow organic nutrient selection and fertigate with said product just think how bad the last 5 days have been and add 10 more days of this.
Every leaf that goes yellow will not recover. Any leaf that turned dry and dead needs to be pulled right away. If you start popping rust holes it is starting to fade micronutrients and could get fatal.
Good luck.
Anything not clear tag me back

 

[JIMKSI64]

Organic nutrients are to be fed at feed schedule rates. These are not like chemical nutrients where you have to sneak up on it or you can go over.
Chemical nutes are like pouring gasoline in your tank. It is ready to go but too much runs it rich and the grow does not run right .
Organics is like having a bunch of crude oil laying around and when the plant calls for gas it has to be made but luckily the gas plant is in the pot. It will convert crude into gas and with the self regulation aspect of organics you have to dump a shit ton in to overshoot.
If you are going to run BB grow and bloom just follow the directions.
I run organics in soil also and my choice was also a liquid nute source. It required pH adjustment cause the sugar portion of the nutes hammered down to 4.4 pH.
Adjusted up to 6.3

 

[leo_bulero]

Thanks for the chart

 

[leo_bulero]

Sure we can help.
Biobizz light mix is an organic soil that is going to run out of nutrition about ....
Week 4.
Root juice is an inoculant to promote roots and silica should not be used so early.
I see no nutrition in your adds until recently. Light mix is all organic and is not a living soil it will trend down in nutrients until used up. Yes you need the biogrow in week 2 to be ready for week 4.
So now we know we need nutrition support. The problem is if you maintain the organic nature or the grow it will take 10 days to make an effect and I do not think you have the time.
I do not normally recommend changing to chemical ferts mid grow but if you had a bag of Jack a and b and some Epsom salts the recovery would start today.
If you start dumping biogrow organic nutrient selection and fertigate with said product just think how bad the last 5 days have been and add 10 more days of this.
Every leaf that goes yellow will not recover. Any leaf that turned dry and dead needs to be pulled right away. If you start popping rust holes it is starting to fade micronutrients and could get fatal.
Good luck.
Anything not clear tag me back

thanks, would Advanced Nutrients Revive be what I am looking for?

 

[JIMKSI64]

nope.
thats just really expensive calmag.
It is full of micronutrients but you need all nutrients.
The BB grow is what you need to keep it an organic grow. Combine the 2 like it says in the instructions during the first part of flower.
Get your grow at feed rate into the plant at next schedule water. do not double water to get the nutes in it will just create more problems.

And hey we all been there and done that. I did not even buy the grow my first rodeo as I thought I could just throw some top dress soil conditioner in and pick up at flowering.
Its a mistake and everybody makes em.
Now if we keep not following package directions then ............

 

[leo_bulero]

nope.
thats just really expensive calmag.
It is full of micronutrients but you need all nutrients.
The BB grow is what you need to keep it an organic grow. Combine the 2 like it says in the instructions during the first part of flower.
Get your grow at feed rate into the plant at next schedule water. do not double water to get the nutes in it will just create more problems.

And hey we all been there and done that. I did not even buy the grow my first rodeo as I thought I could just throw some top dress soil conditioner in and pick up at flowering.
Its a mistake and everybody makes em.
Now if we keep not following package directions then ............

Thx, now at this stage I am at, do you have a name for a fertilizer I should buy to improve the situation?

 

[JIMKSI64]

If you want to stay organic ise the nutes you have at feed rate per biobizz.
If you want to change to chemical ferts I would defer to someone who runs those nutes. They are like the fox farms trio but changing to chemical nutes is different than organic. These have problems of thier own and a need to follow some numbers and make corrections in nutrition strength as the grow progresses. Also these types of grows may need a flush using a wetting agent. If you look at the fox farms trio feed chart it has flushing as a maintainence item right on the chart and yet we still get guys in here with problems.
Recommed you bump this daily when it gets busy a time or 2 and see if someone who runs soil and chemical ferts can chime in.