2 shows. This board has two embedded circuit to sense dissolved oxygen and pH, respectively. The Atlas Scientific Company manufactures these circuits. The first one is the EZO class embedded dissolved oxygen circuit that is a small footprint computer system that takes into account temperature, salinity, and pressure to derive the concentration of dissolved oxygen in the water. The second is the EZO class embedded pH circuit that converts a current generated by hydrogen ion activity into the pH. These embedded circuits have signal conditioning (e.g., filters, amplifying, isolation and processors) to minimize sensing errors during the conversion of the analogs signal into digital signal. Also, this board includes sensors probes that monitor changing water-quality conditions. The sensors probes included are the temperature, dissolved oxygen, and pH. Also, these sensors probes are manufactured by the Atlas Scientific Company. These sensor probes are food grade, and they can be fully submerged in fresh or salt water. Next we describe the sensors probes.