BRAND: Neptune Systems (84)
Best selling Best selling
  • Neptune Trident Six-Month Reagent Kit
    $93.49 $109.99
    No reviews

    Neptune Systems recommends keeping on hand no more Trident reagent than you might expect to consume within the next 12...

  • Neptune Trident NP Two-Month Reagent Kit (For NP unit)
    $50.99 $59.99

    OUT OF STOCK

    No reviews

    Neptune Trident NP Two-Month Reagent Kit - For the NP unit only Two month's reagent supply stores neatly inside the...

  • Neptune PMUP v2 - Practical Multi-purpose Utility Pump v2
    $50.99 $59.99
    No reviews

    The PMUP is a multi-purpose pump that can be used for many different tasks on your aquarium.   Power supply not...

  • Neptune DOS Quiet Drive - Fluid Metering System
    $318.74 $374.99
    No reviews

    DOS- Quiet Drive The best selling dosing pump has gotten better and what’s that- quieter! ▪ 1.5 times quieter (4...

  • Neptune 1LINK Male Cable - 10'
    $25.49 $29.99
    No reviews

    This cable is the 4-pin male to male cable many of you have been waiting for. It is ten feet...

  • Neptune Apex Temperature Probe
    $42.49 $49.99
    No reviews

    Neptune Apex Temperature Probe Keeping a stable and consistent temperature in the aquarium is paramount to the health of your...

  • Neptune Systems Probe Calibration Kit - ph 7.0, ph 10.0, & Salinity 53000uS
    $8.49 $9.99
    No reviews

    The Neptune Systems Probe Calibration Kit includes everything you need to calibrate your pH probe and salinity probe for reef...

  • Neptune Systems Optical Sensor V2
    $33.99 $39.99
    No reviews

    Optical Level Sensor  (OS-1) V2 This sensor plugs into your FMM and, using reflected infrared light, will signal your Apex...

  • Neptune Replacement Head Cap for Dosing Pump
    $42.49 $49.99
    No reviews

    Neptune Replacement Head Cap for Dosing Pump Complete assembly includes cover, peri-tube, fittings and roller wheel. Neptune Systems recommends that...

  • Neptune Energy Bar 832
    $305.99 $359.99
    No reviews

    Please Note: The New EB 832 is not compatible with the classic Apex or Apex Jr systems.   ENERGY BAR...

  • Neptune Systems MXM Module
    $118.99 $139.99
    No reviews

    Expand Your Possibilities Mix and Match your Favorite Equipment!   Scheduled Feeding With the Apex, you can easily start a...

  • Neptune Trident Two-Month Reagent Kit
    $42.49 $49.99
    No reviews

    Neptune Systems recommends keeping on hand no more Trident reagent than you might expect to consume within the next 12...

  • Neptune 16 Meter Tubing for Dosing System
    $21.24 $24.99
    No reviews

    Neptune 16 Meter Tubing for Dosing System  

  • NEPTUNE CONDUCTIVITY CALIBRATION SOLUTION - 53.0 mS
    $5.09 $5.99
    No reviews

    Conductivity / Salinity Calibration Solution - 53.0 mS - 1 packet NOTE: Using this solution on a salinity or seawater...

  • Neptune Liquid Level Sensor - 15"
    $67.99 $79.99
    No reviews

    Never before offered in the aquarium industry the LLS Sensors allow for the measurement of water depth in inches or...

  • Neptune Systems A3 Apex System
    $560.99 $659.99
    No reviews

    An Apex monitored aquarium is a successful aquarium! Introducing the exciting all-new A3 Series of Apex controllers. From the Jr....

  • Neptune Systems 24VDC 36w Power Supply
    $42.49 $49.99
    No reviews

    Power Supply – 24VDC 36W (PS-36-US) This 24VDC, 36W power supply is used with the FMM so that you can...

  • Neptune Systems Fluid Monitoring Module
    $118.99 $139.99
    No reviews

    THE ULTIMATE MULTIPURPOSE FLUID-MONITORING DEVICE! The FMM (Fluid Monitoring Module) is a multi-purpose device that, with the help of various...

  • Neptune Magnetic Optical Sensor
    $50.99 $59.99
    No reviews

    The Magnetic Optical Sensor replaces our optical sensor with magnet and offers an improved look, feel, and magnetic design that...

  • Neptune A3 Apex Pro System
    $828.74 $974.99
    No reviews

        An Apex monitored aquarium is a successful aquarium! Introducing the exciting all-new A3 Series of Apex controllers. From...

  • Neptune Trident ACM - Marine Aquarium Water Analyzer
    $594.99 $699.99

    OUT OF STOCK

    No reviews

    A key ingredient to a great reef aquarium is maintaining proper levels of Alkalinity, Calcium, and Magnesium.   The Trident...

  • Neptune Systems A3 Apex JR
    $254.96 $299.95
    No reviews

    An Apex monitored aquarium is a successful aquarium! Introducing the exciting all-new A3 Series of Apex controllers. From the Jr....

  • Neptune ATK v2 - Automatic Top-Off Kit
    $229.49 $269.99
    No reviews

    No More Manual Topping Off Leave Home for Days without Worry Stop Lugging Buckets and Jugs Maintain Consistent Salinity Levels...

  • Neptune Systems Solenoid Valve
    $42.49 $49.99
    No reviews

    Solenoid Valve (SV-1) This 24VDC powered, normally-closed (NC), solenoid valve has push-fit tubing input and outputs designed for standard 1/4″...

  • Neptune Double Junction Lab Grade pH Probe
    $101.99 $119.99
    No reviews

    The pH and ORP probes are now double-junction as well so they hold calibration longer and have a longer lifespan...

  • Neptune Apex Display Module - Silver with orange LCD
    $120.69 $141.99
    No reviews

    Neptune Apex Display Module

  • Neptune 4 Meter Tubing for Dosing System
    $8.49 $9.99
    No reviews

    Neptune 4 Meter Tubing for Dosing System  

  • pH or orp, temperature, and 6 digital inputs
    $101.99 $119.99
    No reviews

    The first expansion module, the PM1, with a pH or ORP, temperature, and 6 digital inputs. The PM1 features are:...

  • Neptune Trident NP - Marine Aquarium Water Analyzer - Nitrate & Phosphate + 2 Month NP Reagent
    $620.48 $729.98

    OUT OF STOCK

    No reviews

    Includes the Trident NP + 2 Month NP Reagents Trident NP The best selling automated tester ever released has been...

  • Neptune Trident NP - Marine Aquarium Water Analyzer - Nitrate & Phosphate
    $569.49 $669.99
    No reviews

    Trident NP (Reagents sold separately) The best selling automated tester ever released has been modified to now test Nitrates and...

  • Neptune Trident & A3 Apex Pro Controller System Bundle
    $1,423.73 $1,674.98

    OUT OF STOCK

    No reviews

    Control and Monitor your Aquarium with ease    Built in WiFi, key parameter monitoring, and reliable equipment control. Regular automated...

  • Neptune Optical Leak Sensor
    $50.99 $59.99
    No reviews

    New to the leak detector offerings is the Optical Multi Surface Leak Sensor (LD-3).  This is a weighted sensor that...

  • Neptune PMUP v2 - Practical Multi-purpose Utility Pump v2 w/transformer
    $67.99 $79.99
    No reviews

    The PMUP is a multi-purpose pump that can be used for many different tasks on your aquarium.  Automatic Top-Off (ATO)...

  • Neptune Cor-20 Water Pump
    $382.49 $449.99
    No reviews

    RUNS STANDALONE - NO APEX NECESSARY! That’s right, the COR-20 will run completely standalone OR connected to ANY Apex System...

  • Neptune COR-15 Water Pump
    $339.99 $399.99
    No reviews

    CONNECTS TO ANY APEX WITH A 1LINK PORT AVAILABLE That’s right, the COR-15 will work with ANY Apex system that...

  • 12v Apex Power Supply
    $21.24 $24.99
    No reviews

    20V AC to 12V DC Power Adapter for use on the AquaController Apex.

  • Neptune Systems Flow Sensor - 1/4" with Push-Fit Connectors
    $25.49 $29.99
    No reviews

    Flow Sensor – 1/4″ with push-fit connectors  (FS-25) Usually used with aquarium accessories like RODI inputs, calcium reactor feed lines...

  • Neptune Systems Flow Sensor - 1" with unions
    $67.99 $79.99
    No reviews

    Flow Sensor – 1″  (FS-100) Usually used with a return pump, this flow sensor can be placed in line with...

  • Neptune Systems Dos Dual Reservoir
    $220.99 $259.99
    No reviews

    This attractive fluid containment system stores your dosing fluids in style and even tells you when it’s time to refill!...

  • Neptune Magnetic Probe Rack
    $50.99 $59.99
    No reviews

    The little new product we promised. It may be little, but it has been in demand for a long time....

  • Neptune CD Crossover Diet Fish & Coral Food
    $16.99 $19.99
    No reviews

    Created specifically for reef tanks and for use in the AFS (Automatic Feeding System) from Neptune Systems. Feeds both corals...

  • Neptune Salinity - Conductivity Probe - Lab Grade
    $212.49 $249.99
    No reviews

        SALINITY/CONDUCTIVITY PROBE- LAB GRADE Start Measuring Salinity or Conductivity in your tank.  Get alerts when those values are...

  • Neptune I/O Breakout Box
    $50.99 $59.99
    No reviews

    Breakout Box Connect external switches and I/O Inputs to your Apex When connected to the I/O Port of your Apex,...

  • Apex 3' AquaBus Cable (M/M)
    $16.99 $19.99
    No reviews

    3' Male/Male AquaBus cable.  Used to connect an AquaBus module (PM1, EB8, etc) to another AquaBus Module or Apex base...

  • Trident & A3 Apex Controller System Bundle
    $1,423.73 $1,674.98

    OUT OF STOCK

    No reviews

    Start your aquarium with the proper control system!   Fully automate your aquarium with the A3 Apex Controller System, and...

  • Neptune DC24 10' M/F Extension
    $25.49 $29.99
    No reviews

    This is a ten foot Male/Female extension cable that will enable you to remotely locate DC24 accessories like the PMUP....

  • Neptune GRO Refugium Light with Flat Bracket Mount
    $152.99 $179.99
    No reviews

    Some of the most successful reef aquariums employ the use of a macroalgae-filled growth area or refugium for the purpose...

  • Neptune Systems Optical Level Sensor with Magnetic Mount V2
    $50.99 $59.99
    No reviews

    Optical Level Sensor  (OS-1) With Magnetic Mount This sensor plugs into your FMM and, using reflected infrared light, will signal...

  • Neptune Aquabus 30' Extension (M/F)
    $33.99 $39.99
    No reviews

    Aquabus 30′ Extension Cable This is a thirty foot Male/Female Aquabus cable that is used as an extension cable to...

  • Neptune Systems Flow Sensor - 2" with unions
    $118.99 $139.99
    No reviews

    Flow Sensor – 2″ (FS-200) Usually used with a return pump, this flow sensor can be placed in line with...

  • Neptune Systems 1LINK Male - Female- Extension 10'
    $29.74 $34.99
    No reviews

    This is a ten foot Male/Female extension cable for the 1Link. To extend the WAVs

  • Neptune Double Junction Lab Grade ORP Probe
    $110.49 $129.99
    No reviews

    The pH and ORP probes are now double-junction as well so they hold calibration longer and have a longer lifespan...