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 ;)