Chihiros Doctor 5 - Intelligent Aquarium Water Care System with WiFi Control

Chihiros Doctor 5 – Smart Water Care System

The Chihiros Doctor 5 is a smart water steriliser that uses controlled micro-electrolysis to suppress algae and reduce microbial load, while also monitoring water temperature around the clock. It's built to simplify aquarium maintenance: enter your tank size and select a mode, and the device handles the rest without requiring manual water parameter input.

What Makes It Different

At its core, the Doctor 5 applies a controlled electrical voltage to an in-tank electrode, splitting water (H₂O) into hydrogen and oxygen while generating reactive hydroxyl radicals (•OH) in the process. These radicals react directly with algae spores, harmful bacteria, and organic pollutants, neutralizing them — without affecting the beneficial bacteria colonizing your substrate and filter, and without adding any chemicals to the water.

The compact head unit sits outside the tank with a display for time and temperature, while a low-profile mesh reactor and a temperature probe sit inside, attached via suction cup. A magnetic, waterproof connector links the reactor to the main unit, making cartridge swaps quick and mess-free. Bluetooth connectivity through the My Chihiros app lets you monitor and adjust settings remotely; pairing with the optional Wi-Fi Hub Mate adds push notifications when you're away from home.

Key Benefits

• Suppresses algae and reduces bacterial load through micro-electrolysis, without chemical additives
• Continuous temperature monitoring with visual and app-based alerts when readings drift out of range
• Three tailored modes — Plant, Fish, Shrimp — for different tank types
• Magnetic, waterproof connector for fast, secure reactor replacement
• Safe for shrimp, snails, and sensitive fish; doesn't harm beneficial bacteria
• Simple setup — just enter tank volume and mode, no manual TDS input required

Technical Specifications

• Technology: Controlled micro-electrolysis (generates hydroxyl radicals)
• Connectivity: Bluetooth via My Chihiros app; Wi-Fi remote notifications with optional Hub Mate
• Modes: Plant, Fish, Shrimp
• Recommended water: TDS below 500 ppm
• Power consumption: Approximately 12 W
• Includes: Main unit with display, mesh reactor cartridge with suction mount, temperature probe, power supply
• Maintenance: Replace mesh reactor approximately every 6 months

Who Should Use This

• Aquarists dealing with recurring algae or cloudy water who want a chemical-free approach
• Anyone who wants continuous temperature monitoring without checking manually
• Owners of shrimp, snail, or fish-only tanks who want a mode tailored to their setup
• Aquarists who prefer app-based monitoring over manual daily checks

Not suitable for tanks with TDS above 500 ppm, as the manufacturer does not recommend the device for higher-mineral-content water.

Installation and Use

1. Attach the mesh reactor and temperature probe inside the tank using the included suction cup
2. Connect the reactor to the main unit via the magnetic connector
3. In the My Chihiros app, enter your tank volume and select Plant, Fish, or Shrimp mode
4. Position the reactor near gentle outflow rather than a high-flow inlet for best contact time
5. Monitor temperature and algae control status via the on-device display or the app

Expert Tip

Placement matters more than most people expect: put the reactor directly in a strong current and water moves past it too quickly for the oxidizing agents to do their work; tuck it away in a dead zone and it won't circulate through the tank effectively. Gentle, steady flow near the reactor gives the best balance of contact time and distribution.

Frequently Asked Questions

Is the Chihiros Doctor 5 safe for shrimp?

Yes, it's designed to be safe for shrimp, snails, and sensitive fish, and doesn't harm the beneficial bacteria in your substrate or filter.

Does it use chemicals to control algae?

No. It uses controlled micro-electrolysis to generate hydroxyl radicals directly in the water — no chemical additives are introduced.

How often does the reactor need replacing?

Approximately every 6 months, depending on use.

Does it need Wi-Fi to work?

No — core functionality runs over Bluetooth via the My Chihiros app. The optional Wi-Fi Hub Mate adds remote push notifications when you're away from your home network.

What water conditions does it require?

It's designed for freshwater aquariums with TDS below 500 ppm.

Pairs Well With

• Chihiros CO₂ Indicator – for monitoring dissolved CO₂ alongside water quality
• APT Pure – water conditioner for routine water changes