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Reactor Diameter: 4"
Medium Size - 12cm x 10cm
NYOS REEFER test kits - taking measurements at the laboratory level at an attractive price
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PM1 pH/ORP Probe Module - Neptune Systems AI Reactor Diameter: 4"pH 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
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