HYDROS Magnetic Float Switch Sensor | Aquarium Water Level Sensor

Reliable Water Level Monitoring for Your HYDROS Aquarium Control System

The HYDROS Magnetic Float Switch Sensor is a simple, dependable solution for monitoring water levels throughout your aquarium system. Designed to connect directly to any compatible HYDROS Sense Port, this sensor allows your HYDROS Controller to monitor high or low water levels and automatically trigger actions to help protect your aquarium.

Whether you're building an automatic top-off (ATO) system, monitoring your sump, or creating emergency overflow protection, the HYDROS Magnetic Float Switch Sensor provides an affordable and reliable solution.

Please Note: A compatible HYDROS Controller is required for operation and is sold separately.

Key Features

• Reliable magnetic float switch design

• Ideal for automatic top-off (ATO) systems

• Monitor high or low water levels

• Magnetic mount for quick installation

• Plug-and-play with HYDROS Sense Ports

• Compatible with freshwater and saltwater aquariums

• Official CoralVue HYDROS accessory

What Can It Be Used For?

The HYDROS Magnetic Float Switch Sensor can automate or monitor a wide variety of aquarium functions, including:

• Automatic Top-Off (ATO) systems

• Low sump water level alerts

• High sump water level protection

• RO/DI reservoir monitoring

• Skimmer shutoff protection

• Overflow safety monitoring

• Custom automation within the HYDROS app

With HYDROS, the possibilities are nearly endless. Simply connect the sensor to a Sense Port and configure your desired automation using the HYDROS app.

Flexible High or Low Water Detection

The float switch can be configured as either a high-level or low-level sensor, allowing it to adapt to a variety of aquarium applications.

Examples include:

• Turning on an ATO pump when water drops below a set level

• Turning off a skimmer if your sump water level gets too low

• Sending a mobile notification if a reservoir runs empty

• Detecting overflow conditions before they become a problem

Simple Magnetic Installation

The included magnetic mount makes installation fast and secure without the need for suction cups or brackets.

The strong magnetic attachment allows the sensor to be easily repositioned whenever your setup changes, making it ideal for both permanent installations and temporary applications.

Specifications

Connection: HYDROS Sense Port

Connector: GX12 Aviation-Style Connector

Cord Length: 6 ft

Float Switch Dimensions: 3" Long × 0.75" Diameter

Magnet Dimensions: 1" Diameter

Maximum Mounting Thickness: Approximately 2 cm

Compatibility: All compatible HYDROS Controllers with an available Sense Port

Why Choose the HYDROS Magnetic Float Switch Sensor?

A dependable water level sensor is one of the most important safeguards for any aquarium automation system.

The HYDROS Magnetic Float Switch Sensor offers:

• Simple and proven float switch technology

• Reliable water level detection

• Easy installation

• Seamless HYDROS integration

• Expandable monitoring for larger aquarium systems

Whether you're automating top-off, protecting equipment, or adding redundancy to your aquarium controller, this sensor provides dependable performance at an affordable price.

Warranty

The HYDROS Magnetic Float Switch Sensor is backed by a 1-Year Limited Manufacturer Warranty through CoralVue / HYDROS.

Warranty coverage includes defects in materials and workmanship under normal operating conditions. If you experience an issue, simply contact us and we'll gladly assist you through the manufacturer's warranty process.

Why Shop with Infinity & Beyond Aquatics?

At Infinity & Beyond Aquatics, we're more than an online aquarium retailer—we're hobbyists who understand the importance of reliable equipment and exceptional customer service. Every product we offer is carefully selected from trusted manufacturers to help you build and maintain a successful aquarium with confidence.

When you shop with us, you'll enjoy:

• Authorized Dealer for Premium Aquarium Brands

• Genuine Products Backed by Manufacturer Warranties

• Carefully Curated Equipment for Freshwater and Saltwater Aquariums

• Fast Order Processing

• Friendly Customer Support from Fellow Aquarists

• Secure Checkout and Trusted Shipping Partners

Whether you're building your first aquarium or expanding an advanced reef system, we're here to help every step of the way.

Shipping Information

Your order is carefully packaged to help ensure it arrives safely and in excellent condition. Shipping rates are calculated at checkout based on your location, package size, and selected shipping method.

Orders of $100 or more qualify for FREE Standard Shipping (excluding oversized, freight, or specialty items).

Most in-stock orders are processed within 1–2 business days. Some products may ship directly from one of our trusted supplier partners to provide the fastest possible delivery. Tracking information will be provided as soon as your order ships.

Have questions before ordering? Our team is always happy to help you choose the right HYDROS equipment for your aquarium.