Brown Tips on 8 Leaves at top of the plant

[Pebkc]

Hey all,
Any ideas what's going on here, 'Stress Killer Auto' from RQS
Biobizz All Mix soil with good Fungi left for a month etc.
I feed her yesterday with Biobizz Nuets: 1/4 ratio per/L & 3 Liters of water in total, (Grow, small amount), & tiny tiny bit of fish mix, Bloom & Cal-Mag, (she was looking light green-yellowish in various small amount of leaves around the plant reason for Cal-Mag, i think)
The other 2 plants i have slightly more in the veg stage & are fine.
Please help thank you.

 

[namvet25]

How old are they?

 

[Pebkc]

How old are they?

6 weeks old

 

[karlkutta]

how do you water them? PH?

 

[Pebkc]

how do you water them? PH?

I water when they need it, 1 by moisture meter & 2 by weight of fabric pot, with the tiny bit of run off yesterday it was pH 6.3

 

[Pebkc]

Bump

 

[Pebkc]

Bump

 

[Pebkc]

How old are they?

Any ideas namvet25 please.

 

[namvet25]

It's common to have a few yellow leaves near the bottom.Brown tips indicate over feeding so feed every other watering only and see if thishelps.

 

[Pebkc]

It's common to have a few yellow leaves near the bottom.Brown tips indicate over feeding so feed every other watering only and see if thishelps.

Ok namvet25, will do thx man