the tips and sides of ur leaves r all crunchy cuz they r burned... thats y u got those dead shriveled up ones there too... yes remove ur yellow leaves by wiggling them and if they fall off then they r off... if not, try agn tomorow... yes ur leaves will go yellow in flowering, but in ur case, thats fert-burn damage in those pics... i would not sugest addin more nutes at this point as ur leaves r nice and green except the burned edges and the completely singed and dead ones.. next grow go ez on the nutes... less is more, cant hurt it... more is less, can kill it!!!