Aquatronica Aquarium Controller System pH Probe Calming Spot on The stainless steel bowl is

The stainless steel bowl is rust-proof

This data is used to generate a sleeping calendar to help you  identify how your fur baby sleeps best

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and trace elements that support the health

Features pressure and release action that controls the head so the body will follow

Aquatronica Aquarium Controller System pH Probe Calming Spot on The stainless steel bowl isTo measure pH with the Aquatronica Aquarium Controller System, you need two components: the Aquatronica pH Electrode (ACQ310N PH) and the Aquatronica pH Interface (ACQ210N PH). The pH electrode reads the value in the aquarium, and the interface processes the data for the controller. The Aquatronica pH electrode (ACQ310N PH) or probe measures the pH value directly in the aquarium water. Features & Benefits: Function: It must be in continuous immersion