Abstract :
In the cultivation of black tilapia there are problems such as uncontrolled pH levels
and turbidity of water. Therefore, a system was created that can monitor and
control the pH and turbidity of the Black Tilapia fish pond using the circulation
method. Monitoring is carried out using a pH sensor and a turbidity sensor.
Meanwhile, to control the pH and turbidity, two control tubs were be made,
spesifically the first control tub is decreasing the pH (?7.5) and the second control
tub is increasing the pH (<7.5). Both control tubs also function as turbidity filters
so that the turbidity level is less than 50 NTU. The pH and turbidity values will be
displayed momentarily on the LCD and also sent to the Thingspeak database via
the GSM network. Based on the test results for three days, the pH values tends to
decrease from 7.48 to 7.39. Meanwhile, the turbidity levels (NTU) slightly
increased, spesifically was 9.95 NTU to 11.54 NTU. In addition, there is also a test
of sending data to the Thingspeak database on the GSM network, which produces
an average delivery time of 27.21 seconds with a packet loss of 3.07% of all data
that should be sent.
Keywords: Monitoring, Circulation, pH and Turbidity.