Strange spots

[frankthirtyspears]

Hi guys! Recently i haven't been able to figure out what's happening to my photoperiodic Cookies Gelato from RQS.
To give you a bit of context here are some Infos and pics of the situations.
Age: 6 weeks, used BioBizz nutrients (Fish-Mix, AlgMic, activera and a small bit of bloom in the last week or so).
Led Is 450 W Marshydro ts2000 (currently at 75% dimmer, at about 40000 lux at the plant top).
The soil Is a mix of peat and vermiculite at about 60/40 where i transplanted the plant about 3/4 days ago for the last time from a 6 lt pot to a 50 lt one.
I also topped the plant 5 times and lsted her a bit to give a more flat canopy to scrog.
The main issues are the strange brownish/purple and Yellow spots/patches that are appearing in some leaves together with a slight yellowing of some leaves edges.
I think that It could be a cal/Mag deficency but i'm definitely not 100% sure...
Please let me know if you have any ideas and have a nice day ;)

[Vador]

The brown on the leafs like that looks like it could be phosphorus deficiency.
More likely that there’s an imbalance somewhere though I would have guessed, perhaps the soil is a little bit too strong for them and locked out? have you checked ph?

[frankthirtyspears]

The brown on the leafs like that looks like it could be phosphorus deficiency.
More likely that there’s an imbalance somewhere though I would have guessed, perhaps the soil is a little bit too strong for them and locked out? have you checked ph?

I've added a bit of phoshorus recently but eventually i'm gonna try to add more along with Cal mag. The ph should be fine since i check it every watering but i'd try checking ppm maybe.

[Vador]

I wouldn’t add any more if I was you at the moment bud, you might find this is caused by an excess of nutrients in which case adding more will make it worse.
Could be cal mag issue or phosphorus I’d have guessed looking at the leafs.
I see your first post you said you gave them bloom, why was that? Aren’t they still in veg?

[Vador]

Also your under led, my small experience with led seen me with lots of cal mag issues, perhaps that’s what your seeing.
Hopefully someone will be along soon with some better advice

[GMO]

looks like over watering from what i can see. could be wrong tho

[Vador]

Here you go this might help, Was a chart shared with me last night funnily enough