Triple Optical Water Level Sensor by HYDROS

CoralVue HYDROS Triple Optical Water Level Sensor - Keep your Water Levels in Control

The CoralVue HYDROS water level sensor offers reliable, three-point water detection for any aquarium water level monitoring setup. Whether you're managing a reef tank, a dosing container, or an ATO reservoir, this aquarium water level sensor gives you a simple, smart solution—with zero moving parts and maximum peace of mind.

Designed to work with HYDROS controllers via the Sense Port, this compact device helps prevent overflows, pump dry runs, and water level surprises. And with CoralVue’s reputation for innovation in the reefing world, it's no surprise this sensor has become a go-to for serious aquarists.

Why the HYDROS Triple Optical Aquarium Water Level Sensor Stands Out

Every inch of this sensor is engineered to protect your system with precision and durability. This isn’t just another add-on—it’s a true safeguard for your tank’s automation system.

Key Features:

• Three optical sensors provide layered, fail-safe monitoring

• GX12 aviation-style connector preserves the IP65-rated water resistance on HYDROS devices

• Magnetic mounting system works on glass or acrylic up to ½" thick

• Compact body (0.75" x 0.75") fits tight spaces with ease

• Fully sealed—operates in total darkness or direct light

• No moving parts to fail or wear over time

With its optical detection system, this sensor doesn’t rely on float switches or mechanical triggers. That means it won't get stuck or gummed up with salt creep.

How the CoralVue HYDROS Water Level Sensor Monitors Aquarium Water Levels

This HYDROS optical water level sensor is built for layered detection. It tracks three different levels, each with a specific role in protecting your aquarium:

Sensor 1: Low Level

• Detects when water dips too low

• Automatically triggers refilling (ATO system)

2nd Sensor: Normal Level

• Marks the ideal water height

• Stops the top-off process when reached

Sensor 3: High-Level Safety

• Sends an alert and shuts off pumps

• Prevents overflow and flooding events

This three-tiered system ensures your tank stays stable even if one point fails. It’s true redundancy with real-world practicality.

Specifications of the HYDROS Triple Optical Aquarium Water Level Sensor

Built for reefers and hobbyists alike, this CoralVue HYDROS water level sensor delivers both simplicity and serious performance.

Sensor Specs:

• Sensor Head Size: 0.75" diameter × 0.75" thick

• Magnet Mount Size: 0.25" thick

• Cord Length: 75 inches (plenty of flexibility)

• Max Mounting Surface Thickness: ½"

• Compatible Controllers: HYDROS Control XS, X2, X3, X4, X10, XD

This sensor fits nearly any AIO tank, sump, or dosing container without getting in the way or blocking access.

Benefits of Using a HYDROS Triple Optical Water Level Sensor

This aquarium water level sensor does more than just monitor—it safeguards your tank and simplifies your daily maintenance.

Why It’s a Must-Have:

• Reduces risk of overflow and dry pump runs

• Simple setup with no extra power source needed

• Works day and night under any lighting condition

• Compact and low-profile for tight installs

• Zero moving parts means low maintenance

Whether you're a first-time reefer or managing a full control system, this sensor gives you the tools to automate and protect without extra stress.

Final Word on the CoralVue HYDROS Water Level Sensor

The HYDROS Triple Optical Water Level Sensor isn’t just another gadget—it’s a smarter safeguard for your system. Its three-layer detection system, magnetic mount, and rock-solid HYDROS integration make it an essential tool for any aquarist managing aquarium water levels reliably.

And with CoralVue backing it all up with a 1-Year Limited Warranty, you’re investing in dependable gear—not just another accessory.

Compatible HYDROS Controllers

• HYDROS Control X2 Starter Pack
• HYDROS Control X3 (Controller Only)
• HYDROS Control X3 / XP8 Pro Pack
• HYDROS Control X4 Starter Pack
• HYDROS Control X4 (Controller Only)
• HYDROS Control X4 / XP8 Pro Pack
• HYDROS Control X10
• HYDROS Control XD
• HYDROS Control XS Starter Pack
• HYDROS Control XS (Controller Only)

Similar HYDROS Accessories available

• iV w/ Ready-To-Use Alkalinity Testing Reagent
• Dual Inline TDS Sensor
• 3/4" Flow Sensor
• 1" Flow Sensor
• 1.5" Flow Sensor
• HYDROS ATO Kit
• Triple Optical ATO Kit
• Diaphragm Water Pump
• Water Level Sensor

HYDROS Cables available

• 1 Foot System Command Bus Cable
• 3 Foot System Command Bus Cable
• 6 Foot System Command Bus Cable
• 14 Foot System Command Bus Cable
• System Command Bus Terminator
• 9 Foot Drive Port Cable

Final Word on the CoralVue HYDROS Water Level Sensor

The HYDROS Triple Optical Water Level Sensor isn’t just another gadget—it’s a smarter safeguard for your system. Its three-layer detection system, magnetic mount, and rock-solid HYDROS integration make it an essential tool for any aquarist managing aquarium water levels reliably.

And with CoralVue backing it all up with a 1-Year Limited Warranty, you’re investing in dependable gear—not just another accessory.