HYDROS Duet Smart Dosing & Water Change System | Professional Aquarium Controller with Dual Heavy-Duty Pumps

Take your aquarium automation to the next level with the HYDROS Duet, an all-in-one controller and heavy-duty dosing system designed for serious freshwater and saltwater hobbyists. Combining two powerful liquid dosing pumps with the trusted HYDROS ecosystem, the Duet can automate everything from two-part dosing and kalkwasser delivery to fully automatic water changes.

Unlike traditional dosing pumps, the HYDROS Duet is built for continuous reliability and integrates directly into the HYDROS app, allowing you to create intelligent automation based on real-time sensor data. Whether you're maintaining a thriving reef aquarium or a high-tech planted tank, the Duet delivers unmatched precision, flexibility, and peace of mind.

Perfect For

• Reef aquariums

• Freshwater planted aquariums

• Automatic water changes

• Calcium & alkalinity dosing

• Magnesium supplementation

• Kalkwasser dosing

• Trace element dosing

• Auto top-off reservoir refills

• Commercial and advanced aquarium systems

Key Features

• Two heavy-duty, high-capacity dosing pumps

• Built-in HYDROS Controller

• Automates water changes with precision

• Independent programmable pump schedules

• Smart automation using HYDROS sensors and inputs

• Easy programming through the HYDROS app

• Quiet and reliable operation

• Expandable with the complete HYDROS Collective ecosystem

• Compact design for clean installations

• Local control with cloud connectivity

• Perfect for both freshwater and marine aquariums

Intelligent Aquarium Automation

The HYDROS Duet is much more than a dosing pump.

Because it functions as a HYDROS controller, it can react to changing aquarium conditions. For example, you can pause dosing if pH rises too high, stop water changes if a leak is detected, or trigger custom routines based on water level sensors or other HYDROS devices. This intelligent automation helps protect your aquarium while reducing daily maintenance.

Ideal Applications

Automatic Water Changes
Set precise schedules to continuously remove old water while adding freshly mixed saltwater.

Two-Part Dosing
Maintain stable calcium and alkalinity with accurate daily dosing.

Kalkwasser Systems
Deliver kalkwasser safely through programmable dosing schedules.

Trace Element Dosing
Automate micronutrient additions without manual measuring.

Freshwater Fertilizers
Perfect for planted aquariums requiring consistent nutrient dosing.

HYDROS Collective Compatible

Already own HYDROS equipment?

The Duet seamlessly joins your existing HYDROS Collective, allowing all compatible controllers to communicate as one intelligent system. Expand your aquarium automation over time without replacing existing equipment.

Why Choose the HYDROS Duet?

✔ Professional-grade dosing accuracy

✔ Powerful enough for automatic water changes

✔ Smart controller and dosing system in one device

✔ Simple setup through the HYDROS app

✔ Expandable as your aquarium grows

✔ Trusted HYDROS reliability

What's Included

• HYDROS Duet Controller

• Two integrated heavy-duty dosing pumps

• Power supply

• Tubing and connection accessories

• Quick start documentation

(Contents may vary slightly by manufacturer packaging.)

Why Shop With Infinity and Beyond Aquatics?

At Infinity and Beyond Aquatics, we don't just sell aquarium equipment—we use it. Every product we carry is selected with reliability, performance, and long-term success in mind. Whether you're building your first reef or managing an advanced aquarium system, we're here to help before and after the sale.