Neptune Apex Probe Module 1 Groupers It is quite a challenging

It is quite a challenging coral to maintain and is only recommended for experienced aquarists

Helps maintain alkalinity for coral growth and reef stability

or water-quality management

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

Neptune Apex Probe Module 1 Groupers It is quite a challengingNeptune 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