This LOF comes from pineapple skin waste obtained in Rimbo Panjang Village. The LOF from pineapple waste contains nutrients in the form of NPK which are useful for the growth of L. minor. This research aims to determine the effect of providing liquid organic fertilizer (LOF) waste of from pineapple skin (ananas comosus) on the density Lemna minor in gurami fish (osphronemus gouramy) rearing med…