Please help

[Vlad]

Hello guys, i have a little problem with my girls and i just cant figure out what is it and how to fix it....They are growing quite good since now but these rusty spots are worrying me.... It could be a potassium lockout (whatever that means) so i need your professional opinion if someone had it and a way of fixing it....many thanks in advance

 

[Vlad]

They are one month old the ph is 6/6.5 only start up(Plagron) for now so it could be a burn from nutritions...I think....

 

[OzBud]

Doesn't look like nutrient burn

possible phosphorus deficiency? http://www.growweedeasy.com/phosphorus-deficiency-cannabis
possible problems in the root zone. Is that soil or coco? If soil then pH6 is too low.

 

[OzBud]

https://www.growshoponline.nu/en/vmchk/nutrients-additives/plagron/plagron-start-up-250-ml/

 

[Vlad]

Its soil Plagron royal mix and its maybe a bit strong....my temperature is 22/24 C and my humidity is 50/60 % if that is of some use

 

[OzBud]

Soil or coco? Pot size?
What light are you using & what height is it above your plants?
What size tent is it & how many plants are in it?
Is it happening to all your plants or just some?
Where is it affecting the plant, bottom older leaves?

I've only done one grow and didn't really run into any problems so I don't know how much help I can be but I'll do my best. Other people will come along at some point to help out as well

 

[OzBud]

No Title

being soil you don't really want to go below 6.2-6.3 for soil otherwise your plant doesn't have access to all nutrients (which can lead to nutrient deficiencies) . Going as low as 6 your plant won't be able to use calcium and little to no phosphorus either.

 

[OzBud]

This stuff?
https://www.kiwiland.com/growshop/growing-medium/soil-and-bio/plagron-royalty-mix.html

Looks alright to me, don't understand why it would come with a pH of 5.9-6.2 though...

 

[Vlad]

Thanks man you are very polite

 

[Vlad]

Yes thats ot the soil