Hydros 2″ Flow Sensor

Track Water Flow in Real Time with the HYDROS 2" Flow Sensor Aquarium Flow Sensor

The HYDROS 2" Flow Sensor Aquarium Flow Sensor gives hobbyists a unique tool to monitor large-volume water systems with precision. Designed for freshwater and saltwater aquariums alike, this sesnor can read flow rates ranging from 200 to 4050 gallons per hour (GPH)—making it a solid choice for coral grow-outs, commercial tanks, or for serious home reef tank setups.

Built for Big Systems: HYDROS 2" Flow Sensor Aquarium Flow Sensor Features

Whether you’re feeding a reactor or driving a return pump, this flow sensor helps you keep tabs on one of the most critical elements in your system: water movement. And with the HYDROS app in play, you'll stay one step ahead at all times.

Key Features:

• Flow Range: 200–4050 GPH

• Wire Length: 8 feet

• Fittings Included: Schedule 80 PVC unions (built to last)

• Power Source: None required—connects via Sense Port

• Plug Type: GX-12 aviation-style for secure connection

• Platform Compatibility: Works with HYDROS Control units with available Sense Ports

This unit was made specifically to integrate with the HYDROS control platform—no adapters or extra cables needed.

HYDROS 2" Flow Sensor Helps You Automate and Protect Your Aquarium

The HYDROS 2" Flow Sensor does more than just measure—it empowers smart decision-making. Set parameters in the HYDROS app to create safety triggers. If your flow drops too low or spikes unexpectedly, you can automatically shut off connected devices using a HYDROS Power 4 WiFi power strip, Smart Plug, or Control XP8.

Use Cases Include:

• Return pump performance monitoring

• Reactor flow regulation

• Emergency shutdowns for overflows or clogs

• Long-term flow trend tracking

With flow data in your pocket, troubleshooting becomes a breeze.

Installation Tips for the HYDROS 2" Flow Sensor Aquarium Flow Sensor

Gettin

g the sensor running doesn’t require an engineering degree—just basic plumbing skills and a few supplies.

You’ll Need:

• A HYDROS Controller with an open Sense Port

• Pipe thread tape and PVC cement

• A clean, dry workspace

• Patience (and maybe a favorite playlist)

Once installed, you’ll wonder how you ever ran your system without it.

Built by AutoAqua, Engineered by CoralVue

Manufactured in Taiwan by AutoAqua—creators of the Smart ATO Micro—and tested in the U.S. by CoralVue, the Flow Sensor delivers trusted reliability. CoralVue’s product team built this sensor from the ground up to ensure seamless performance with all HYDROS equipment.

No clunky external power bricks. No proprietary adapters. Just plug in, configure, and go.

Additional HYDROS Flow Sensor Sizes Available

Need a different size for a smaller system or return line? HYDROS has options:

• ¾” Flow Sensor – 40–800 GPH

• 1” Flow Sensor – 50–1500 GPH

• 1½” Flow Sensor – 100–2500 GPH

All include the same high-quality Schedule 80 PVC unions and 8-foot cable.

Warranty Info

CoralVue backs the HYDROS Flow Sensor with a 6-month limited warranty covering materials and craftsmanship.

Follow us for Gear Drops, Tank Inspiration, and Reefing Tips

• Join the reef scene on reef2reef
• Browse daily tank content on Instagram
• Stay updated on restocks and gear via Facebook
• Watch reef gear in action on TikTok