Neptune Flow Sensor - 1 Inch Refugium Lighting It should be positioned where

It should be positioned where bubbles

Its thin profile keeps attention on the aquarium

Softens in hot water and hardens again as it cools

Product type: replacement pH probe

Test the pump after replacement and confirm normal controllable operation

Neptune Flow Sensor - 1 Inch Refugium Lighting It should be positioned whereNeptune Flow Sensor 1 Inch Neptune Flow Sensor 1 Inch is an inline aquarium flow sensor for measuring return pump and filtration flow through standard 1 inch plumbing when connected to the Neptune FMM. 1 Inch Flow Monitoring for Return Pumps The 1 inch Neptune Flow Sensor is commonly used on return pump plumbing to show how much water is actually moving through the system. This is valuable because real world flow is often much lower than the pump