Dr. Abdel Razzaq M. Al-Tawaha has completed a PhD in horticulture. His work was about increased biomass production of lettuce through nutrient management in a decoupled recirculation aquaponics system at Universiti Putra Malaysia, Malaysia. Currently, he is working as a researcher at the National Agriculture Research Center (NARC) in Jordan. He has interests in aquaponics, hydroponics, nutrient recycling in aquaponics, and protected agriculture.