Light burn, brown spots on leaf

Je pense que du 300 à du 1000w direct ça a basculer votre plante J aurais mis du 600 pour l habituer aussi Au pire remontée un peu en hauteur la lumière

It's caused from the light yes.. But what is actually is.. is an increase in transportation (photons=photosynthesis). So because you added some light your plant used a bit more Calcium then regular but this is not a calcium deficiency.. Some will tell you it is.. It's not.. It's the balance was changed so your plant says hey I was a bit short on something but generally. Speaking the upper half of the canopy is what we are most concerned about and where you will see "new" changes.. Ie. If I add too much nutrients that'll show up at the top where there is there is the highest amounts of transportation.