Removal of structurally diverse pesticides was simultaneously assayed in biomixtures. Herbicides and some fungicides were mostly removed after 70 d (optimum period). Neonicotinoid insecticides and triazole fungicides were not significantly removed. Co-application of oxytetracycline affected only removal of carbendazim and metalaxyl. Ecotoxicity towards Daphnia magna was not reduced but phytotoxicity decreased.