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Probes & Controller Accessories

(72 items)

Fine-tune your saltwater aquarium with high-quality Probes & Controller Accessories. This collection includes pH probes, temperature probes, salinity probes, ORP sensors, calibration fluids, and mounting accessories—everything you need to keep your monitoring equipment accurate and your controller system running smoothly.

Compatible with leading reef aquarium controllers like HYDROS, Neptune Apex, and GHL, these accessories help automate dosing, maintain stability, and track key water parameters in real time. Whether you're calibrating a new probe or expanding your system, this gear is built to support precise reefkeeping.