Neptune Systems FMK - Fluid Monitoring Kit

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Comes with one module and three flow sensors

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$ 360.00

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The Neptune Systems FMK Fluid Monitoring Kit comes with a fluid monitoring module (FMM) and a total of three flow sensors. The module works with any Apex controllers (such as Apex 2016, Apex Classic, Apex Lite, Apex Jr.) and together with the flow sensors, the entire kit lets you monitor the water flow of your aquarium system.

The FMK is designed to check for consistency of the water flowing through devices such as pumps, reactors, biopellet reactors, filtration system.

The FMK will notify you to any water-flow issue immediately (eg. blockages or reduction in flow rate), so that you can replace or maintain the affected devices promptly to keep your aquarium in optimal state.

The FMM module can also support other optional sensors for functions such as detecting water currents, sense water levels, detect leakage, etc.


The Neptune Systems FMK Fluid Monitoring Kit includes:

  • FMM (Fluid Monitoring Module) with 4 multi-function monitoring ports
  • 1 x 1-inch Flow Sensor (FS-100)
  • 2 x 1/2-inch Flow Sensors (FS-50)
  • 2 x 1-inch Unions
  • 2 x 1/2-inch Adapters

FMM (Fluid Monitoring Module)

The FMM (Fluid Monitoring Module) is a module that connects to any Apex (Apex(2016), Apex Classic, Apex Lite, Apex Jr.) via it is AquaBus port providing four multi-function monitoring ports that can be used for flow sensors, water-level sensors, leak detections sensors and possibly future products as well.

1-inch Flow Sensor (FS-100)

This flow sensor connects to the FMM, monitors the flow of water through the device, and then reports it back to your Apex via the FMM. This sensor is most often used to measure the flow in the main return line of a standard-sized aquarium. The FS-100 will work with flow rates from 150-1500 gph.

Two 1/2-inch Flow Sensors (FS-50)

This flow sensor connects to the FMM, monitors the flow of water through the device, and then reports it back to your Apex via the FMM. Two of these are included in the FMK. These sensors are perfect for attaching to devices such as media reactors, biopellet reactors, etc. The FS-50 will work with flow rates from 30-250 gph.

Two 1-inch Unions

To connect your FS-100 Flow sensor, Neptune Systems has included in the FMK, two 1-inch BSPT -> 1-inch Slip PVC Unions.

Two 1/2-inch Adapters

To connect your two FS-50 Flow sensors, Neptune Systems has included in the FMK, two 1/2-inch BSPT -> 1/2-inch Slip PVC Adapters.

Measuring the flow of your aquarium's main return pump is an incredibly useful piece of information. The key benefit would be to have the Apex notify you the instant the flow stops for any reason usually the result of a failed or faulty pump. Furthermore, an indication of a reduced flow rate could be used to determine that the pump or the lines are dirty or are becoming clogged with algae, debris, animals, or the growth of organisms inside your plumbing.

Auxiliary pumps on reactors and the like are very handy applications for the FMM. Place a flow sensor on a device like a carbon/gfo reactor and it serves many purposes. First off, you will know if your pump is not on or is faulty. Next, you can easily fine-tune the flow into the reactor by watching the dashboard tile on your Apex. Finally, you can know when the reactor is becoming clogged with detritus or possibly channeling has occurred by an alert on your Apex or by monitoring your dashboard.

Put a flow sensor inline to your device, plug it in to the FMM, and see exactly the flow rate of the water (any aquarium fluid really) going through that sensor. The industrial-grade flow sensors use either a turbine or paddle-wheel mechanism (depending on the model) to measure the flow.

Neptune Systems Online Shop

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About N30

About N30 Tank

N30 Tank Pte. Ltd. is a leading manufacturer of custom-made fish tanks cabinets. As a tank maker, we supply aquarium cabinets to homes and offices locally as well as ship orders worldwide.

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