Neptune Apex Probe Module 1 Groupers Helps maintain alkalinity for coral

Helps maintain alkalinity for coral growth and reef stability

and the polyps are a lighter shade of the same hue

then slowly discharge the contents of the device 2 - 4" upstream of the target organism(s)

One HIBLOW HP-100/120 lower-housing base gasket

HIBLOW Large HP-Series Air Filter Compatibility

Neptune Apex Probe Module 1 Groupers Helps maintain alkalinity for coralNeptune Apex Probe Module 1 The Neptune Apex Probe Module 1 expands a compatible Apex system with an additional pH or ORP probe port, an extra temperature port, six digital inputs, AquaBus expansion, and full Apex data logging. PM1 Expansion for pH or ORP Monitoring The PM1 is a practical Apex expansion module for aquariums that need another pH or ORP monitoring point. It is commonly used for calcium reactors, kalkwasser monitoring, secondary pH