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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Original price $79.90 - Original price $79.90Original price$79.90$79.90 - $79.90Current price $79.90LD-2 Solid Surface Leak Detection Probe
Only 1 left!Neptune Systems LD-2 Leak Detection Probe safeguards your aquarium investment by identifying water leaks, overflows, and spills before they cause d...
View full detailsOriginal price $79.90 - Original price $79.90Original price$79.90$79.90 - $79.90Current price $79.90
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Original price $79.90 - Original price $79.90Original price$79.90$79.90 - $79.90Current price $79.90LD-1 Low Profile Leak Detection Probe
Only 1 left!Neptune Systems LD-1 Leak Detection Probe – a slim, low-profile sensor engineered for tight spaces where standard detectors won't fit. Designed to ...
View full detailsOriginal price $79.90 - Original price $79.90Original price$79.90$79.90 - $79.90Current price $79.90
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Original price $679.90 - Original price $679.90Original price$679.90$679.90 - $679.90Current price $679.90COR-15 Intelligent Return Pump (1500 GPH)
Only 2 left!The COR-15 is a next-generation return pump engineered for aquarists who demand precision control and reliability. Delivering up to 1500 GPH, this ...
View full detailsOriginal price $679.90 - Original price $679.90Original price$679.90$679.90 - $679.90Current price $679.90
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Original price $49.90 - Original price $49.90Original price$49.90$49.90 - $49.90Current price $49.90AquaBus Cable 6Ft (M/M)
Only 2 left!Neptune Systems AquaBus Cable engineered for Apex Controller systems. This 6-foot M/M cable connects your Apex base unit to compatible modules and ...
View full detailsOriginal price $49.90 - Original price $49.90Original price$49.90$49.90 - $49.90Current price $49.90
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Original price $39.90 - Original price $39.90Original price$39.90$39.90 - $39.90Current price $39.90AquaBus Cable 3Ft (M/M)
Only 1 left!Neptune Systems AquaBus Cable engineered for Apex Controller systems. This 3-foot M/M cable connects your Apex base unit, modules, and Energy Bars...
View full detailsOriginal price $39.90 - Original price $39.90Original price$39.90$39.90 - $39.90Current price $39.90
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Original price $59.90 - Original price $59.90Original price$59.90$59.90 - $59.90Current price $59.90AquaBus Cable 15Ft Male - Female
Only 2 left!Neptune Systems AquaBus Cable engineered for Apex Controller systems. This 15ft male-to-female connector links your Apex base unit, modules, and E...
View full detailsOriginal price $59.90 - Original price $59.90Original price$59.90$59.90 - $59.90Current price $59.90
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Original price $59.90 - Original price $59.90Original price$59.90$59.90 - $59.90Current price $59.90
AquaBus Cable 15Ft (M/M)
Only 1 left!Neptune Systems AquaBus Cable engineered for Apex Controller systems. This 15-foot M/M cable connects your Apex base unit, modules, and Energy Bar...
View full detailsOriginal price $59.90 - Original price $59.90Original price$59.90$59.90 - $59.90Current price $59.90
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Original price $29.90 - Original price $29.90Original price$29.90$29.90 - $29.90Current price $29.90AquaBus Cable 1Ft (M/M)
Only 1 left!Neptune Systems AquaBus Cable engineered for Apex Controller systems. This 1-foot interconnect cable links your Apex base unit, modules, and Energ...
View full detailsOriginal price $29.90 - Original price $29.90Original price$29.90$29.90 - $29.90Current price $29.90
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Original price $259.90 - Original price $259.90Original price$259.90$259.90 - $259.90Current price $259.90AFS Automatic Feeding System
Only 1 left!The Neptune Systems AFS transforms feeding into a precise, automated process that works seamlessly with your Apex Controller. Schedule multiple fee...
View full detailsOriginal price $259.90 - Original price $259.90Original price$259.90$259.90 - $259.90Current price $259.90
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Original price $629.90 - Original price $629.90Original price$629.90$629.90 - $629.90Current price $629.90A3 Apex Jr Aquarium Controller System
Only 1 left!The A3 Apex Jr transforms aquarium management by automating the monitoring tasks that keep your reef thriving. This entry-level controller tracks t...
View full detailsOriginal price $629.90 - Original price $629.90Original price$629.90$629.90 - $629.90Current price $629.90
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Original price $9.90 - Original price $9.90Original price$9.90$9.90 - $9.90Current price $9.907.00 pH Calibration Fluid
15 in stockNeptune Systems pH 7.00 Calibration Solution – Single Use Packet Keep your pH probe readings accurate with this single-use calibration packet. pH ...
View full detailsOriginal price $9.90 - Original price $9.90Original price$9.90$9.90 - $9.90Current price $9.90
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Original price $99.90 - Original price $99.90Original price$99.90$99.90 - $99.90Current price $99.904 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 ...
View full detailsOriginal price $99.90 - Original price $99.90Original price$99.90$99.90 - $99.90Current price $99.90
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Original price $219.90 - Original price $219.90Original price$219.90$219.90 - $219.90Current price $219.90
35 Inch LLS Liquid Level Sensor
Only 1 left!Neptune Systems LLS – Liquid Level Sensor delivers continuous, precision water level monitoring for advanced aquarium automation. Unlike traditiona...
View full detailsOriginal price $219.90 - Original price $219.90Original price$219.90$219.90 - $219.90Current price $219.90
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Original price $179.90 - Original price $179.90Original price$179.90$179.90 - $179.90Current price $179.90
23 Inch LLS Liquid Level Sensor
Only 1 left!Neptune Systems LLS – Liquid Level Sensor Achieve precise, continuous water level monitoring with the 23" Neptune Systems LLS Sensor. Unlike tradit...
View full detailsOriginal price $179.90 - Original price $179.90Original price$179.90$179.90 - $179.90Current price $179.90
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Original price $249.90 - Original price $249.90Original price$249.90$249.90 - $249.90Current price $249.902" Flow Sensor FS200
Only 1 left!Neptune Systems FS-200 Flow Sensor – 2" Slip PVC Monitor high-volume water movement with precision. The FS-200 is Neptune Systems' largest flow sen...
View full detailsOriginal price $249.90 - Original price $249.90Original price$249.90$249.90 - $249.90Current price $249.90
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Original price $9.90 - Original price $9.90Original price$9.90$9.90 - $9.90Current price $9.9010.00 pH Calibration Fluid
15 in stockNeptune Systems pH 10.00 Calibration Solution – Single Use Packet Maintain accurate pH readings across your aquarium's full range with this high-p...
View full detailsOriginal price $9.90 - Original price $9.90Original price$9.90$9.90 - $9.90Current price $9.90
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Original price $49.90 - Original price $49.90Original price$49.90$49.90 - $49.90Current price $49.901/4" Flow Sensor FS25
Only 1 left!Neptune Systems FS-25 Flow Sensor – Precision Flow Monitoring for Your Apex System Track water movement with confidence using this compact ¼" flow ...
View full detailsOriginal price $49.90 - Original price $49.90Original price$49.90$49.90 - $49.90Current price $49.90
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Original price $79.90 - Original price $79.90Original price$79.90$79.90 - $79.90Current price $79.901/2" Flow Sensor FS50
Only 1 left!The Neptune Systems FS-50 Flow Sensor delivers precise mid-range flow monitoring for your aquarium's critical systems. Measuring between 114–946 L/...
View full detailsOriginal price $79.90 - Original price $79.90Original price$79.90$79.90 - $79.90Current price $79.90
