PM1 pH/ORP Probe Module Sands & Substrates incorporate abundant live rock formations

incorporate abundant live rock formations with numerous crevices to establish distinct territories and mitigate aggression

Approximate size range may also vary

they may consume shrimp and small crustaceans

Ammonia poisoning is the most common killer of aquarium fish

PM1 pH/ORP Probe Module Sands & Substrates incorporate abundant live rock formationspH ORP Probe Expansion Module for the Neptune Systems Apex Compatible with all Apex Systems Dual Functionality: Choose Between pH and ORP Monitoring I O Port for Breakout Box Connection 2 AquaBus Ports pH ORP Probe Port The PM1 can be used with either a pH or ORP probe, depending on what you're looking to monitor. For example, if you're running two aquariums near each other, you can connect a pH probe to the PM1 and run both tanks off the same Apex