This paper addresses the solution of a differential-difference type equation having an interior layer behaviour. A difference scheme is suggested to solve this equation using a non-standard finite difference method. Finite differences are derived from the first and second order derivatives. https://www.diegojavierfares.com/special-pick-Foxfarm-Ocean-Forest-Garden-Potting-Soil-Bags-6-3-6-8-pH-1-5-Cu-Ft-4-Pack-p38700-great-pick/