FISH CULTURE

Study of quality water. Water [is] all water which there are [in] nature and or come from source of water, and there are, above surface of land;ground, [do] not the included in this congeniality [is] water which there are subsurface and sea water. quality of Water. [is] the nature of life being content and water, energi, or other component in water. Quality of water expressed with a few parameter of[is quality of water covering physics parameter like temperature, turbidity, dissolve density, etcetera. Chemical parameter which include;cover pH, dissolve oxygen, BOD, metals rate and others; biological parameter cover existence of bacterium plankton and its. Contamination of Water. [is] entry of or including of life being, energi, and or other component into water by activity of human being, so that the quality of water get down to to certain storey;level which cause water [do] not function again according to allotment of [him/ it]. source of : Hefni Effendie, 1999.

OPERATION OF DISEASE of[is NON PARASITER. A. ENVIRONMENT. Deplesi ( insuffiency ) oxygen represent one of [the] environmental factor which often become cause losing of fish, especially [in] pool which containing many organic materials. Influence lacking of oxygen to losing of fish [in] pool earn happened directly and also indirectly. At the (time) of oxygen content in very low water, most existing fish will die, except some species capable to take direct oxygen from the air. Indirectly, lacking of oxygen can cause fish become stres so that [is] easy to attacked by organism cause of disease. To overcome the the loss require to study to [regarding/ hit] factors influencing oxygen deplesi. Primary factor influencing oxygen concentration [in] pool [is] fotosintesa, oxygen diffusion and respirasi from the air into water. [At] fertile pool ( rich of water plant and fitoplankton) during Daytime will happened photosynthesis process yielding many oxygen, so that oxygen concentration [in] pool e

OPERATION OF DISEASE of[is NON PARASITER. A. ENVIRONMENT. Deplesi ( insuffiency ) oxygen represent one of [the] environmental factor which often become cause losing of fish, especially [in] pool which containing many organic materials. Influence lacking of oxygen to losing of fish [in] pool earn happened directly and also indirectly. At the (time) of oxygen content in very low water, most existing fish will die, except some species capable to take direct oxygen from the air. Indirectly, lacking of oxygen can cause fish become stres so that [is] easy to attacked by organism cause of disease. To overcome the the loss require to study to [regarding/ hit] factors influencing oxygen deplesi. Primary factor influencing oxygen concentration [in] pool [is] fotosintesa, oxygen diffusion and respirasi from the air into water. [At] fertile pool ( rich of water plant and fitoplankton) during Daytime will happened photosynthesis process yielding many oxygen, so that oxygen concentration [in] pool e