Light leaves during flowering

'Is it normal for the old leaves to turn yellow during flowering? the new growth looks good but the old leaves are dying off.

nitrogen deficient.

how do i cure that

feed it some nutrients with nitrogen in them

any recomendations

i use foxfarm trio, i give them one last drink of veg nutes, 2 weeks into flower, then run them on tiger bloom from the trio, the whole way thru flower, if they yellow out again thru flower, just a small shot of veg nutes again, to perk them up

or they have just nitrogen powder at your local hydro stores, but definitely add some N