TrolMaster Aqua-X pH Sensor Inline, Heavy Duty, PPH-2TrolMaster PPH 2 Inline pH Sensor: Heavy Duty Precision for Your Growing System The TrolMaster PPH 2 Inline pH Sensor is a robust and reliable tool designed for continuous monitoring of pH levels in your hydroponic system, aquarium, or other water based applications. This commercially rated sensor provides accurate readings, ensuring optimal conditions for your plants or aquatic life. Key Features: Heavy Duty Construction: Built for continuous use in