Left panel: QSO spectrum of PHL 1811 observed with PMAS as a representative example for a strong Fe ii emitter. The available wavelength range of the V300 grating was set such that Hβ and Hα would be covered at the redshift of the QSO. The Fe ii complex blueward of Hβ is not fully covered for PHL 1811, as in many other objects. Right panel: comparison of two available Fe ii templates from Boroson & Green (1992) and Véron-Cetty et al. (2004) both based on the proto-typical QSO I Zw 1. Both templates were scaled to match the isolated Fe ii λ5014 line. The disagreement between the templates is severe given that they were generated from the same QSO.