Temperature, flow, leak and level sensors

The sensors in this chapter connect to the labelled USB ports on the hub. Installation always follows the same ritual — power off, connect, power on, check — so it is summarised only once:

6.1 Temperature (TEMP ports)

Monitoring temperature is the most basic need of any aquarium, and the kit already includes a category A sensor. The three TEMP ports accept sensors from categories A, B and C:

Sensors of the same category are automatically averaged — useful in large aquariums, to read the temperature at more than one point and work with the mean.
Sensors of different categories appear as independent readings (Temp A, Temp B, Temp C) — for example: aquarium, sump and room.

The PRO temperature sensor that comes with the product.

Characteristic	Value
Resolution	12 bits — 0.0625 °C
Update	Every 60 seconds
Categories	A, B and C

6.2 Flow (FLOW A and B ports)

Flow sensors measure the flow in your plumbing: the actual return flow, or the ideal flow through the chiller or the UV filter. Use the model that matches your pipe diameter:

Model	Maximum flow
DN15	30 L/min — 1,800 L/h
DN20	60 L/min — 3,600 L/h
DN25	120 L/min — 7,200 L/h
DN32	120 L/min — 7,200 L/h
DN40	200 L/min — 12,000 L/h

Flow sensor, installed in line with the plumbing.

After connecting, set the model in System → Calibration → Flow (Chapter 20) and check the reading on the Sensors screen.

6.3 Leak detection (LEAK A and B ports)

Every aquarist's nightmare is a silent leak. The two LEAK ports let you monitor two separate spots — for example, the cabinet floor and the sump area.

The leak sensor sits flush with the floor, metal face down.

Install it with the metal face down, flush with the floor.
Choose the spot considering the slope of the floor — that is where the water runs.
To test it, touch the metal part with a wet fingertip and check the alert on the Sensors screen.

6.4 MAG magnetic level sensor (LEVEL A and B ports)

The MAG level sensor detects water through the glass, without touching it — ideal for monitoring the overflow level or the top-off reservoir with nothing inside the water.

The MAG sensor sticks to the outside of the glass.

Suited to glass up to 5 mm thick (adjustable up to 10 mm).
40 cm cable — use the USB extender, up to a maximum of 5 metres.
Connect it to the LEVEL A or LEVEL B ports.

6.5 Optical level sensor (LEVEL C and D ports)

The optical sensor is the precision one: it detects the level at an exact point, ideal for controlling evaporation top-off in the sump or the balling reservoir.

The optical sensor, with its magnetic holder included.

3-metre cable, with a magnetic holder included.
With a USB extender, a maximum total length of 5 metres.
Connect it to the LEVEL C or LEVEL D ports.