Lab Grade Double Junction pH Probe lighting or any high flow area

or any high flow area of a trickle filter

0-10V Input Control

Accuracy/Precision: Nitrate: +/- 1 PPM +/- 5% of reading | Phosphate: +/- 0

will signal your Apex when it changes state from being wet to dry or dry to wet

Vortech MQD Series (MP10 | MP40 | MP60)

Lab Grade Double Junction pH Probe lighting or any high flow areaDouble Junction probes will out last most other traditional lab grade probes letting you go longer between calibrations, and having to purchase and replace probes less frequently. The Double Junction isolates the reference gel and probe from proteins and other organics that may otherwise precipitate and clog, shortening the lifespan of the probe. Longer lasting Reliable readings Quality connections BNC style connector Neptune's Double Junction pH