AquaWiz KH Controller

Set-and-forget alkalinity control. No reagents. No mess. Just stable KH.

Tired of cans and bottles of test solutions—and the daily testing grind? The AquaWiz KH Controller™ (Gen 4)automatically measures and (optionally) maintains your tank’s carbonate hardness, keeping your reef stable while you enjoy it.

Why reefers love it

• Reagent-free monitoring – No test solutions to buy, store, or dispose of.

• Hands-off stability – Built-in dosing pump can automatically dose your KH solution to hold your target.

• Smart recovery – Automatically resumes normal operation after a power outage.

• External control ready – KH-to-pH BNC output lets a pH controller read/drive KH-related control if desired.

• Zero-hassle calibration – Ships with a dedicated pH electrode; no extra calibration step required.

• Proactive maintenance – Detects electrode aging and reminds you when it’s time to replace.

• Peace of mind on the go – Email alerts if readings drift out of your set range.

• Flexible schedule – Set measurement intervals from 1 to 6 hours via the web interface.

How it works

1. Measure: The controller samples your water on your chosen schedule (1–6 hours).

2. Decide: If KH is off your target, it calculates the correction.

3. Correct (optional): The internal dosing pump adds your alkaline solution to bring KH back in range.

4. Report: Results are logged and alerts sent if anything needs your attention.

Key features at a glance

• Automatic KH measurement & optional closed-loop control

• Built-in dosing pump for alkalinity solution

• Auto-resume after power loss

• KH→pH BNC output for integration with pH controllers

• Included specific pH electrode; no extra calibration step

• Electrode health monitoring with replacement reminders

• Email notifications for out-of-spec readings

• Web dashboard with adjustable test intervals (1–6 hours)

Ideal for

Reef keepers who want stable alkalinity without daily testing, traveling hobbyists who need reliable alerts, and anyone aiming for consistent SPS growth and overall system stability.

Specs (summary)

• Measurement interval: Adjustable 1–6 hours (web UI)

• Control method: Integrated dosing pump (alkalinity solution)

• Integration: KH-to-pH BNC output for external pH controller read/control

• Calibration: Not required beyond the included specific pH electrode

• Alerts: Email notifications when outside user-defined range

• Recovery: Automatic resume after power outage

What’s different about Gen 4?

Faster, smarter, and more hands-off than ever, with reagent-free operation, built-in dosing, auto-resume, and proactive electrode health checks