2020-08-072020-08-072012Abbassa International Journal for Aquaculture, 5(1): 326-3461687-7683https://hdl.handle.net/20.500.12348/4275This experiment aimed to study the effect of agriculture gypsum treatment in aquaculture ponds (to raise water total hardness) on the physico-chemical and biological parameters of pond water and fish performance in a polyculture system. In order to achieve this goal, twelve 0.1-feddan (0.1-fed.).pond culturewater quality controlEffect of gypsum treatment on water quality parameters and fish performance in fertilized polyculture earthen pondsJournal Article