Gracilaria Changil (Xia et Abott) Abott, Zhang et xia (Rhodophyta) tank culture as biofilter for dissolved inorganic nitrogen from fish tank effluents

Abstract

Recently, intensive monospecies aquaculture has caused a certain degree of nutrient pollution when large amounts o f nitrogen are released to the environment. Therefore, Gracilaria changii which has a high yield of good quality agar and abundant in Malaysia are suggested for use in integrated farming to remove the main polluting compounds ammonium, nitrite and nitrate.