Is normal that the plant (44days passed, 7^ week) ...

I honestly don't think you have any deficiency in the plant . Just get rid of any leaves that get no light . As well if your looking for deficiency check the big leaves at the lowest part of the canopy that does get light those after you clean up the bottom leaves will be your indicators for deficiencies.

This plant also looks droopy. Look at those fan leaf stems... They droop if the plant wants water. I'd check the soil pH and check the runoff EC/PPM as well. They look hungry but it could be that the soil has locked 'em out too.

Olá amigo Eu acho que as folhas de baixo sempre ficam amarelas caso não apanhem muita luz ou luz nenhuma. Mas se não for esse o caso, será mesmo falta de Nitrogénio eu adicionava Grow para ajudar nesse problema. Já agora estás de parabéns pelo cultivo .

Yellow on the bottom / old leaves symptomatic of n.p.k deficiencies - in your case I reckon N cause they dont look burned or broned earpy on, but just pale until they stsrt to crisp and yellowing from the tips inward as the plant eats them from the inside. I would add a bit more feed and should be good, just go easy - plant will be getting hungry now for bud production. Good luck! :)