Two models of a 0.55-M_⊙ star with different maximum depletion abundances. The evolution is plotted with respect to effective temperature of the star and the [Zn/Ti] ratio in the photosphere of the model. The blue curve with [Zn/Ti] = 4 dex is the accretion abundance from Fig. 2 which is used throughout all of our MESA models. The orange curve is the same model, but the accretion abundances are scaled to [Zn/Ti] = 2 dex. The accretion parameters used in both models are Ṁ(0) = 1.5 × 10⁻⁷ M_⊙ yr⁻¹, M_d = 10⁻² M_⊙, and T₀ = 4000 K.