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Effluent from vast expanses of aquaculture farms can have major environmental consequences based on intensive culture and the pressure on fish production. Use of commercial feed and fertilizers increases the nutrient, plankton, suspended solids concentration along with BOD (biological oxygen demand) of pond discharge water in contrast to the receiving waters [1, 2]. As a remedy to this ecological impact, there are a few aquaculture technologies such as integrated agriculture-aquaculture systems (IAAS) and integrated multi-trophic aquaculture (IMTA) propose a proper utilization of commercial feed by the various farmed animals and plants in the system, thereby reducing the nutrient load in the discharge water [3, 4, 5, 6]. The steady implementation of such technology is either too futuristic or complex although it is been tested in coastal regions of Philippines in aqua silviculture programmes with success [7, 8].

Quality of Extensive Brackish Water Polyculture Farm Effluents at Different Production Levels and its Impact on the Receiving Environment