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Overview Keep your Apex probes secure, organized, and accurate with the Neptune Systems MPR (Magnetic Probe Rack). Designed specifically for Apex systems, this durable acrylic rack uses strong neodymium magnets to hold up to four probes in place, preventing floating probes and false readings. With one oversized slot for larger probes such as the Neptune temperature probe, the MPR ensures all your probes remain fully submerged and precisely positioned for reliable monitoring. Key Features Holds Up to 4 Probes – Compatible with Neptune’s temperature, pH, ORP, and salinity probes. Oversized Slot – Securely fits larger-diameter probes like the Neptune temp probe. Strong Magnetic Mounting – Neodymium magnets hold securely on sumps and aquariums up to ½" thick. Prevents False Readings – Keeps probes fully submerged to avoid air exposure. Durable Construction – Built from high-quality acrylic for long-lasting use. Compact Design – Saves space while neatly organizing all your Apex probes in one location. Product Specifications Material: Acrylic with neodymium magnets Capacity: 4 probe slots (1 oversized for large probes) Mounting Compatibility: Glass or acrylic up to ½" thick Dimensions: 4" (L) x 2.5" (D) with screws fully backed out

Overview The Neptune Systems 1LINK Module is designed to simplify connectivity and expand control of your Apex aquarium system. With the ability to power and control up to three 1LINK-compatible devices—such as WAV pumps and the DOS dosing system—the 1LINK reduces clutter, saves outlets, and delivers reliable wired communication. Seamlessly integrate your pumps and dosing equipment into Apex Fusion for advanced automation and flow customization. Key Features Multiple Device Control – Supports up to 3 WAV pumps or 2 WAV pumps plus 1 DOS dosing system. Smart Power Management – Consolidates power and communication into a single cable per device. Apex Fusion Integration – Unlocks advanced flow modes and automation for WAV pumps and DOS. Reliable Wired Connection – Provides both power and communication without the issues of wireless syncing. Simple Setup – One power supply, one module, and click-and-go installation. Outlet-Saving Design – Eliminates the need for multiple bulky power bricks. Why 1LINK? Unlike wireless interconnectivity that can reduce reliability in small-scale setups, 1LINK ensures stable and consistent communication by using a wired connection. This approach removes unnecessary costs, avoids complicated syncing processes, and ensures your devices perform exactly as intended—without interference. Product Specifications Model: Neptune Systems 1LINK Module Device Capacity: Up to 3 WAV pumps, or 2 WAV pumps + 1 DOS pump Connectivity: One-click wired connection with power + communication Compatibility: Neptune Systems WAV pumps & DOS Fluid Metering System Power Management: Single power supply for multiple devices What’s Included Neptune Systems 1LINK Module

Overview The Neptune Systems AquaBus Extension Cables provide the extra reach you need to expand your Apex system. Designed specifically for use with Apex Controllers, modules, and Energy Bars, these extensions make it easy to connect components when longer cable runs are required. Simply plug the male end into any Apex module and connect the female end to your existing AquaBus cable. Important Note: While AquaBus cables use USB-style connectors, they are not USB cables. Do not connect them to a computer or other USB device, as it may cause severe damage to your Apex or the connected device. Key Features Extend Your Reach – Provides additional length for AquaBus connections. Simple Plug & Play – Male-to-female connection makes extending cables easy. Flexible Configurations – Works with both daisy-chain and star topology setups. Durable & Reliable – Built to maintain stable communication across longer runs. Multiple Lengths Available – Choose from 15 ft or 30 ft. Product Specifications Cable Type: AquaBus Extension Cable (USB-style, Apex-specific) Lengths Available: 15 ft, 30 ft Compatibility: Neptune Systems Apex Controllers, Modules, and Energy Bars What’s Included (1) Neptune Systems AquaBus Extension Cable (choose length: 15 ft or 30 ft)

Overview The Neptune Systems AquaBus Cable is designed specifically for expanding your Apex ecosystem. Use these purpose-built cables to connect Apex controllers, modules, and Energy Bars together in either a daisy-chain or star topology configuration. Available in multiple lengths, AquaBus cables provide flexibility in managing your aquarium’s control system setup. Important Note: AquaBus cables may look like standard USB cables but are not USB-compatible. Do not plug them into a computer or any other USB device—doing so may cause severe damage to your Apex system or the connected device. Key Features Expand Your Apex System – Connects controllers, modules, and Energy Bars. Flexible Configurations – Supports daisy-chain or star topology setups. Multiple Length Options – Available in 1 ft, 3 ft, 6 ft, 15 ft, and 30 ft. Durable Construction – Built for long-term reliability in demanding environments. Plug & Play – No configuration required—just connect and go. Product Specifications Cable Type: AquaBus (USB-style connectors, Apex-specific) Lengths Available: 1 ft, 3 ft, 6 ft, 15 ft, 30 ft Compatibility: Neptune Systems Apex Controllers, Modules, and Energy Bars What’s Included (1) Neptune Systems AquaBus Cable (choose length: 1 ft, 3 ft, 6 ft, 15 ft, or 30 ft)

Overview The A3 Apex Jr. is your affordable entry point into smart aquarium monitoring. Designed for aquarists who want reliable, essential monitoring without the complexity, the Apex Jr. continuously tracks temperature, pH, water levels, and leaks, keeping your tank and home safe. With built-in WiFi, remote access via Apex Fusion, and customizable alerts, you’ll enjoy peace of mind knowing your aquarium is always under watch — no matter where you are. Expandable and future-ready, the Apex Jr. grows with your hobby. Add additional modules for salinity, dosing control, lighting, pumps, and more, tailoring your monitoring system as your aquarium evolves. Key Features Essential Monitoring – Tracks temperature, pH, water level, and potential leaks. Instant Notifications – Alerts you when parameters fall outside your safe zones. Expandable System – Add Apex modules and accessories over time (e.g., salinity probes, power bar control, dosers). Built-in WiFi & Remote Access – Monitor and control your aquarium anytime, anywhere with Apex Fusion. Apex Fusion App – Free, cloud-based platform with drag-and-drop customization, task automation, and real-time graphing. Peace of Mind – Early warnings help prevent disasters, save money, and reduce stress. Product Specifications Base Connectivity: 2x AquaBus ports for expansion Included Monitoring: Temperature, pH, water level (MOS sensor), leak detection (LD-2 sensor) Alerts: Configurable notifications via Apex Fusion Mounting: Wall-mountable base unit Remote Access: Supported on computer, tablet, or smartphone via Apex Fusion What’s Included 1x A3 Apex Jr. Base Unit 1x Power Supply 1x Temperature Probe 1x pH Probe 1x MOS Magnetic Optical Sensor (water level) 1x LD-2 Leak Detection Sensor 1x Calibration Solution Pack (7 & 10) Mounting Screws Quick Start Guide

Overview Keep your Neptune Systems Trident Marine Water Analyzing System running seamlessly for half a year with this 3-Pack Replacement Reagent Kit. Each kit is designed for quick and easy swap-outs, with pre-filled bottles that drop directly into the Trident’s reagent holder. No mixing, no mess, and only a few minutes to exchange. With three full kits included, you’ll have a 6-month supply of reagents based on the default testing schedule. Key Features 6-Month Supply – Includes three full 2-month reagent kits for long-term convenience. Easy to Replace – Pre-filled bottles fit directly into the Trident for quick and simple swaps. Reliable Accuracy – Includes calibration samples to maintain precise Alkalinity, Calcium, and Magnesium testing. Cost-Effective Bundle – Stock up with a 3-pack and avoid running out of reagents mid-cycle. Shelf-Life Optimized – Reagents last up to 12 months; purchase only what you’ll use within that period. Testing Capacity (Approx. 6 Months at Default Schedule) Alkalinity: 720 tests (Reagent A, changed monthly) Calcium: 360 tests (Reagent B, changed every 2 months) Magnesium: 360 tests (Reagent C, changed every 2 months) What’s Included 6x Reagent A 3x Reagent B 3x Reagent C 3x Seawater Calibration Samples

Overview Keep your Neptune Systems Trident NP Nitrate & Phosphate Tester running at peak performance with this official Replacement Reagent Kit. Designed for accuracy and convenience, the kit provides everything you need to perform two months of daily testing (one nitrate and one phosphate test per day). With pre-filled bottles and clear instructions, swapping reagents is simple and mess-free, ensuring your Trident NP continues delivering consistent, reliable results. Key Features 2-Month Supply – Supports one nitrate and one phosphate test per day for up to 60 days. Complete Kit – Includes all necessary reagents plus calibration solution and waste neutralizer. Reliable Results – Maintains accurate readings for optimal water quality and stability. Easy to Use – Pre-filled bottles fit directly into the Trident NP reagent holder. Shipping Restriction – Due to chemical composition, reagents must ship upright and via ground transport only. Waste Management – Requires a Trident NP Waste Container or equivalent HDPE Class 2 plastic/glass container (sold separately). What’s Included 1x Calibration Solution 1x NP Reagent 1 1x NP Reagent 2 1x NP Reagent 3a 1x NP Reagent 3b 1x Waste Neutralizer

Overview Keep your Neptune Systems Trident Marine Water Analyzing System running smoothly with the official Replacement Reagent Kit. Designed for quick and easy replacement, this kit includes pre-filled bottles that fit directly into the Trident’s reagent holder — no mixing, no mess, and no downtime. Simply swap out the old bottles for new ones in minutes and keep your automated testing system accurate and reliable. Key Features Complete Refill Kit – Includes all reagents and a seawater calibration sample for continued testing accuracy. Long-Lasting Supply – Provides up to 2 months of testing with the default schedule. Pre-Filled Bottles – Slide directly into the Trident reagent holder for fast, hassle-free replacement. Accurate & Reliable – Ensures your Trident continues delivering precise Ca/Alk/Mg readings. Neptune Systems Quality – Official reagent kit, formulated specifically for use with the Trident system. Testing Capacity (Approx. 2 Months at Default Schedule) Alkalinity: 240 tests (Reagent A, changed monthly) Calcium: 120 tests (Reagent B, changed every 2 months) Magnesium: 120 tests (Reagent C, changed every 2 months) What’s Included 2x Reagent A 1x Reagent B 1x Reagent C 1x Seawater Calibration Sample

Overview The Neptune Systems 1LINK Male x Male 4-Pin Cable provides a simple and clutter-free connection for your DŌS Fluid Metering System. By connecting your DŌS directly to a 1LINK Module or EnergyBar 832, this cable eliminates the need for a bulky power brick and additional AquaBus cable, streamlining your setup and saving space. Key Features Simplified Setup – Connects your DŌS system with just one cable. No Power Brick Needed – Eliminates the bulky power supply for a cleaner, more organized system. Direct Apex Integration – Allows full control of the DŌS pump system through your Apex via the 1LINK or EnergyBar 832. Durable & Reliable – Designed for long-term performance. Extended Reach – 10 ft length for flexible equipment placement. Product Specifications Cable Type: 1LINK Male x Male 4-Pin Cable Length: 10 ft Connections: 4-pin Male x Male Compatibility: Neptune Systems DŌS Fluid Metering System, 1LINK Module, EnergyBar 832 What’s Included (1) Neptune Systems 1LINK Male x Male 4-Pin Cable – 10 ft

Overview The Neptune Systems 1LINK Extension Cable gives you added flexibility when positioning your 1LINK-powered accessories. Perfect for extending the reach of WAV pumps, COR pumps, or other 1LINK devices, this durable extension cord connects directly between your accessory and the 1LINK Module or EnergyBar 832. With male-to-female connectors and robust construction, it’s built for long-term reliability. Key Features Extended Reach – Adds 10 ft of length to your 1LINK accessory connection. Compatible Devices – Works with WAV pumps, COR return pumps, and all 1LINK-powered equipment. Durable Design – Built for long-term use with secure male-to-female connectors. Easy Installation – Plug-and-play connection with no setup required. Flexible Placement – Position pumps and accessories exactly where you need them. Product Specifications Cable Type: 1LINK Extension Cable Length: 10 ft Connections: Male-to-Female Compatibility: Neptune Systems 1LINK Module & EnergyBar 832 What’s Included (1) Neptune Systems 1LINK Extension Cable – 10 ft

Overview Take your aquarium automation to the next level with the Neptune Systems Liquid Level Sensor (LLS) — the first-of-its-kind, industry-exclusive solution for continuous water level monitoring. Unlike traditional float or optical sensors that only detect “on/off” states, the LLS provides real-time measurements of liquid depth in both inches and centimeters. From tracking evaporation and dosing container levels to managing sump or mixing station volumes, the LLS delivers unmatched precision and flexibility. With seamless integration into your Apex Fusion app, you can set alerts, trigger automated actions, and even view animated graphs that help you visualize changes over time. Whether you’re managing an ATO reservoir, sump, or dosing system, the LLS opens the door to smarter, safer, and more reliable aquarium automation. Key Features Continuous Depth Monitoring – Measures exact liquid levels in real time (cm & in). Smarter Than Float Switches – Tracks changes in evaporation, consumption, and dosing more accurately. Wide Applications – Use in sumps, ATO reservoirs, AIO tanks, dosing containers, mixing stations, and more. Apex Fusion Integration – Monitor, graph, and visualize data with digital and animated readouts. Custom Alerts & Automation – Trigger Apex actions or receive notifications when levels rise or fall. Easy Mounting – Includes clip for quick and secure installation. Four Size Options – Available in 4", 15", 23", and 35" lengths to suit different applications. Compatibility Works with A2 Apex (via FMM module) or A3 Apex (via embedded FMM ports or separate FMM). Not compatible with A1 Apex Classic models. Available Sizes LLS-4: 4" (ideal for dosing containers & ATO reservoirs) LLS-15: 15" (small sumps or medium containers) LLS-23: 23" (standard sumps & reservoirs) LLS-35: 35" (large sumps, mixing stations, or storage tanks)