Neptune Variable Speed/Dimming Module (VDM) Airline Tubing & Accessories Raises marine aquarium pH to

Raises marine aquarium pH to 8

It has thin tissue which is prone to tearing

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and debris from entering intake or drain lines

Neptune Variable Speed/Dimming Module (VDM) Airline Tubing & Accessories Raises marine aquarium pH toNeptune Variable Speed Dimming Module (VDM) The Neptune Variable Speed Dimming Module (VDM) expands a compatible Apex system with four 0 10V variable voltage outputs and one serial port outlet for Apex Ready lighting control. VDM Lighting and 0 10V Control Expansion The VDM is designed for Apex users who need additional variable speed or dimming control outputs. It can control compatible equipment that accepts the common 0 10V interface and can also