Diagnosting my auto

Hello Guys.
Thank you for accepting me here.
I'm growing 5 Mimosa x Orange Kush Auto.
I'm growing on soil with BioBizz Light-Mix 85% and BioBizz Humus 15%.
My growing medium pH its around 6.3 in all plants.
They're on week 5 by now.
I'm feeding them with BioBizz by they're schedule, but i'm giving the nutrient dose for All-Mix while using light mix. (because of autos)
Until week 4, i've been feeding them with the schedule for vegetation, but by week 4, I change to first week of flowering, by mistake.
The plants started showing some yellowish/brown spots and I instantly went for Cal Mag defiency. I wantered them with BioBizz CalMag 0.6ml/L. But then, in the night i started overthinking and I stumbled on the previous conclusion, so, now I'm pointing for Phospherus or Potassium excess.
I flushed them with 6.3 pH water, without nutrients (So i could check the medium pH and flush the extra Phospherus and Potassium).
But i really think I need a second thought on this. Can somebody help me?

I’m seeing something similar on mine, which are 2 weeks younger than yours. since I have a water softener I assumed it was cal/Mag deficiency. I watered them with a very dilute Cal/Mag. I have come across this at my place before and adding Cal/Mag seems to work. Mine are autos going outside. For what it’s worth.

First … Stop flushing. All you are gonna do is unbalance that medium and cause even more issues.

Second … Stop overthinking things - it’s a plant.

No need to follow feed schedule verbatim… plant will transition when its ready not according to how you feed. Continue with a standard “ veg “ type feeding. And keep feeding this way until buds start to form and thru the transition time thru flower , since that extra nitrogen will used for the stretch phase and keeping leaves green / healthy.

Start bloom after it has sexxed out / stretched and setting up budsites. That plant ain’t there right now.

Issue with leaf is a minor K deficiency ( symptoms mimic nute burn but is not ) symptoms often show brown edges like yours.

You can also topdress more “ all mix “ into top of plant and simply water that in. It is already nute precharged - thus eliminating the overthinking.

Freerojo said:

I’m seeing something similar on mine, which are 2 weeks younger than yours. since I have a water softener I assumed it was cal/Mag deficiency. I watered them with a very dilute Cal/Mag. I have come across this at my place before and adding Cal/Mag seems to work. Mine are autos going outside. For what it’s worth.

Click to expand...

Before hand, thank you for minding replying to my post with your previous issues!
Is the CalMag treatment resulting?

Budzbuddha said:

First … Stop flushing. All you are gonna do is unbalance that medium and cause even more issues.

Second … Stop overthinking things - it’s a plant.

No need to follow feed schedule verbatim… plant will transition when its ready not according to how you feed. Continue with a standard “ veg “ type feeding. And keep feeding this way until buds start to form and thru the transition time thru flower , since that extra nitrogen will used for the stretch phase and keeping leaves green / healthy.

Start bloom after it has sexxed out / stretched and setting up budsites. That plant ain’t there right now.

Issue with leaf is a minor K deficiency ( symptoms mimic nute burn but is not ) symptoms often show brown edges like yours.

You can also topdress more “ all mix “ into top of plant and simply water that in. It is already nute precharged - thus eliminating the overthinking.

Click to expand...

Thank you very much.
I'll add a bit of All-Mix on top of my Light-Mix so it can treat the K (Potassium) deficiency.
Do you think I should add a bit of Bio-Bizz Alg-a-Mic in the next watering? (right after this flushing, wish may take somewhere from 24 to 32 hours) ?
I will try to relax a little bit more !

BiozBizz OficialSite said:

Alg·A·Mic is a revitalising product that contains a low level of NPK (Nitrogen, Phosphorus and Potassium) – making it impossible to overdose.

Click to expand...

Volture said:

Thank you very much.
I'll add a bit of All-Mix on top of my Light-Mix so it can treat the K (Potassium) deficiency.
Do you think I should add a bit of Bio-Bizz Alg-a-Mic in the next watering? (right after this flushing, wish may take somewhere from 24 to 32 hours) ?
I will try to relax a little bit more !

Click to expand...

Not familiar with that product per say but seems to be a seaweed based product which is ok.

When running autos - try to not grow it on multibottles of unnecessary products.

You literally can grow them on the host soil for weeks alone then “ recharge “ that host soil by simply adding fresh soil on top and watering in.

This alone replenishes that medium and supplements what the plant used up. All without guessing.

Keep things simple.

Volture said:

Before hand, thank you for minding replying to my post with your previous issues!
Is the CalMag treatment resulting?

Click to expand...

It did. There wasn’t much.