can you tell what wrong with these 12/12cycle

600 watt light canna a and b 40ml in 10 liter and 5ml of bxcel gave one feed with budblood and now this happens small yellow leafs fan on constant and extractor most day

First pic people

they are sativa right ,the only thing i see is you have a slight nutrient burn on tips but they look ok to me

It gets lighter on the areas where it will start budding, perfectly normal

Its growing?.....OK what did I win????

yes there are 4monther just wasn't sure about the yellow leaves and small thin ones