1. Effect of different filter media use on aquaponics system on ammonium (NH4+), nitrite (NO2) and nitrate (NO3) concentrations of catfish (Clarias sp.) aquaculture. Issue 1 (February 2020) Authors: Lukmantoro, T A; Prayogo, ; Rahardja, B S Journal: IOP conference series Issue: Volume 441:Issue 1(2020) Page Start: Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗