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February Deals Are Coming — Dropping in 48 Hours
February Deals Are Coming — Dropping in 48 Hours

Neptune Systems

Precision Monitoring & Automation for Serious Reef keepers
Explore our full range of Neptune Systems gear—built for accuracy, control, and peace of mind. From the powerful Apex Controller and Trident water testing system to flow meters, probes, and leak detectors, Neptune’s modular components give you the tools to automate and monitor every part of your reef tank. Perfect for both new setups and long-term reef maintenance.

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    $139.90 - $139.90
    $139.90
    $139.90 - $139.90
    $139.90

    Neptune 2-Month Trident Reagent Kit

    6 in stock

    Maintain precise water parameters with the Neptune Systems Trident Reagent Kit, designed for seamless compatibility with your Trident Marine Water ...

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    $139.90 - $139.90
    $139.90
    $139.90 - $139.90
    $139.90

  • $19.90 - $19.90
    $19.90
    $19.90 - $19.90
    $19.90

    Probe Calibration Kit - ph 7.0, ph 10.0, & Salinity 53000uS

    Only 1 left!

    Keep your Apex system's probes performing at peak accuracy with this essential calibration kit. Probe drift is inevitable in reef environments, mak...

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    $19.90 - $19.90
    $19.90
    $19.90 - $19.90
    $19.90

  • $1,499.90 - $1,499.90
    $1,499.90
    $1,499.90 - $1,499.90
    $1,499.90

    Trident - Marine Aquarium Water Analyzer

    Only 2 left!

    Neptune Systems Trident: Precision Water Chemistry Monitoring The Trident delivers laboratory-grade automated testing for saltwater aquariums, meas...

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    $1,499.90 - $1,499.90
    $1,499.90
    $1,499.90 - $1,499.90
    $1,499.90

  • $224.95 - $224.95
    $224.95
    $224.95 - $224.95
    $224.95

    Neptune Apex Trident DIY Service Kit

    Only 4 left!

    Neptune Systems recommends, but does not require, that your Trident receives a preventative service between 24-36 months of operation. It’s possibl...

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    $224.95 - $224.95
    $224.95
    $224.95 - $224.95
    $224.95

  • $99.90 - $99.90
    $99.90
    $99.90 - $99.90
    $99.90

    MPR Magnetic Probe Rack

    Only 2 left!

    Neptune Systems Magnetic Probe Rack (MPR) keeps your Apex system's probes organised and stable. This acrylic-mounted solution securely holds up to...

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    $99.90 - $99.90
    $99.90
    $99.90 - $99.90
    $99.90

  • $79.90 - $79.90
    $79.90
    $79.90 - $79.90
    $79.90

    Neptune Apex Temperature Probe

    Only 4 left!

    Neptune Systems Long-Life Temperature Probe delivers precision monitoring across your Apex-controlled aquarium setup. Built for extended durabilit...

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    $79.90 - $79.90
    $79.90
    $79.90 - $79.90
    $79.90

  • $99.90 - $99.90
    $99.90
    $99.90 - $99.90
    $99.90

    PMUP v2 Practical Multi-Purpose Utility Pump

    Only 2 left!

    The Neptune Systems PMUP v2 is a compact DC pump engineered for aquarium automation tasks like auto top-off, media reactor circulation, and dosing....

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    $99.90 - $99.90
    $99.90
    $99.90 - $99.90
    $99.90

  • $259.90 - $259.90
    $259.90
    $259.90 - $259.90
    $259.90

    MXM Mobius Wireless Control Module

    Only 1 left!

    Consolidate your aquarium ecosystem with the MXM Mobius Wireless Control Module, designed to unify Neptune Systems, EcoTech Marine, and AquaIllumin...

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    $259.90 - $259.90
    $259.90
    $259.90 - $259.90
    $259.90

  • $199.90 - $199.90
    $199.90
    $199.90 - $199.90
    $199.90

    PM1 pH/ORP Probe Module

    Only 1 left!

    Neptune Systems PM1 – Expand Your Apex System's Monitoring Reach Add a second pH or ORP measurement point to your Neptune Apex controller with this...

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    $199.90 - $199.90
    $199.90
    $199.90 - $199.90
    $199.90

  • $849.90 - $849.90
    $849.90
    $849.90 - $849.90
    $849.90

    DOS QuietDrive Dosing Pump

    Only 2 left!

    The Neptune Systems DŌS QuietDrive is an ultra-quiet, precision dosing pump engineered for Apex A2 and A3 Series Controllers. Featuring QuietDrive ...

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    $849.90 - $849.90
    $849.90
    $849.90 - $849.90
    $849.90

  • $1,599.90 - $1,599.90
    $1,599.90
    $1,599.90 - $1,599.90
    $1,599.90

    A3 Apex Pro Aquarium Controller System

    Only 1 left!

    The A3 Apex Pro Aquarium Controller System is Neptune Systems' flagship monitoring and control solution for serious aquarists. This fully-equipped ...

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    $1,599.90 - $1,599.90
    $1,599.90
    $1,599.90 - $1,599.90
    $1,599.90

  • $139.90 - $139.90
    $139.90
    $139.90 - $139.90
    $139.90

    15 Inch LLS Liquid Level Sensor

    Only 1 left!

    Neptune Systems LLS – Liquid Level Sensor delivers continuous, precise water depth monitoring for advanced aquarium automation. Unlike traditional ...

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    $139.90 - $139.90
    $139.90
    $139.90 - $139.90
    $139.90

  • $14.90 - $14.90
    $14.90
    $14.90 - $14.90
    $14.90

    Neptune Systems Conductivity Calibration Solution - 53000 Microsiemens

    10 in stock

    Keep your Neptune Systems conductivity probe calibrated with this single-use 53,000 µS reference solution. Formulated to match natural seawater at...

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    $14.90 - $14.90
    $14.90
    $14.90 - $14.90
    $14.90

  • $429.90 - $429.90
    $429.90
    $429.90 - $429.90
    $429.90

    Neptune Apex Conductivity Probe (salinity)

    Only 2 left!

    Track salinity levels with precision using this Neptune Apex conductivity probe, designed to monitor parts per thousand (ppt) in real time. Consist...

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    $429.90 - $429.90
    $429.90
    $429.90 - $429.90
    $429.90

  • $350.00 - $350.00
    $350.00
    $350.00 - $350.00
    $350.00

    Neptune Trident NP 2-Month Reagent Kit

    Only 1 left!

    Neptune Systems Trident NP 2 Month Reagent Kit For Trident NP Marine Water Analyser

    $350.00 - $350.00
    $350.00
    $350.00 - $350.00
    $350.00

  • $249.90 - $249.90
    $249.90
    $249.90 - $249.90
    $249.90

    FMM Fluid Monitoring Module

    Only 1 left!

    Neptune Systems FMM – Fluid Monitoring Module expands your Apex Controller with four sensor ports and one DC24V accessory port for comprehensive sy...

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    $249.90 - $249.90
    $249.90
    $249.90 - $249.90
    $249.90

  • $549.90 - $549.90
    $549.90
    $549.90 - $549.90
    $549.90

    ATK V2 Auto Top Off Kit

    Only 2 left!

    The Neptune Systems ATK is a self-contained automatic top-off system engineered to maintain consistent water levels and salinity without requiring ...

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    $549.90 - $549.90
    $549.90
    $549.90 - $549.90
    $549.90

  • $1,149.90 - $1,149.90
    $1,149.90
    $1,149.90 - $1,149.90
    $1,149.90

    A3 Apex Aquarium Controller System

    Only 1 left!

    Power Board Sold Separately and Due 2026 Empowering Aquarists with Critical Monitoring and Precision Control Unrivalled Control and Monitoring Head...

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    $1,149.90 - $1,149.90
    $1,149.90
    $1,149.90 - $1,149.90
    $1,149.90

  • $149.90 - $149.90
    $149.90
    $149.90 - $149.90
    $149.90

    1" Flow Sensor FS100

    Only 2 left!

    The Neptune Systems FS-100 Flow Sensor delivers real-time flow monitoring for high-capacity aquarium systems up to 5,678 L/h. Engineered for 1" sli...

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    $149.90 - $149.90
    $149.90
    $149.90 - $149.90
    $149.90

  • $19.90 - $19.90
    $19.90
    $19.90 - $19.90
    $19.90

    DOS Replacement Tubing

    Only 2 left!

    Compatible with Neptune Systems DOS dosing pumps, this replacement tubing extends your fluid delivery lines with reliable performance. Use it to r...

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    $19.90 - $19.90
    $19.90
    $19.90 - $19.90
    $19.90

  • $229.90 - $229.90
    $229.90
    $229.90 - $229.90
    $229.90

    Lab Grade Double Junction pH Probe

    Only 2 left!

    Neptune Systems' Double Junction pH Probe combines laboratory-grade precision with extended durability for demanding reef aquariums. The dual-chamb...

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    $229.90 - $229.90
    $229.90
    $229.90 - $229.90
    $229.90

  • $229.90 - $229.90
    $229.90
    $229.90 - $229.90
    $229.90

    Lab Grade Double Junction ORP Probe

    Only 1 left!

    Neptune Systems Double Junction ORP Probe Reliable, Long-Lasting ORP Monitoring for Reef Systems Overview The Double Junction ORP Probe from Neptu...

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    $229.90 - $229.90
    $229.90
    $229.90 - $229.90
    $229.90

  • $79.90 - $79.90
    $79.90
    $79.90 - $79.90
    $79.90

    MOS Magnetic Optical Sensor

    Only 2 left!

    Neptune Systems MOS – Magnetic Optical Sensor The MOS delivers precise water-level detection through infrared optical technology, engineered for re...

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    $79.90 - $79.90
    $79.90
    $79.90 - $79.90
    $79.90

  • $499.90 - $499.90
    $499.90
    $499.90 - $499.90
    $499.90

    DDR DOS Dual Reservoir

    Only 2 left!

    Neptune Systems DDR – DOS Dual Reservoir The DDR is a dual-reservoir storage system engineered for Neptune DOS dosing setups. With two 2-litre cham...

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    $499.90 - $499.90
    $499.90
    $499.90 - $499.90
    $499.90

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