Pool Controls Chemigem D21 — Fully-Integrated Domestic Water Chemistry Controller

All-in-one chlorine and pH dosing in a robust, integrated unit

The Chemigem D21 offers a clean, user-friendly solution for maintaining perfect pool chemistry. Featuring built-in timers, peristaltic dosing, and multi-electrode monitoring, it automatically corrects chlorine and pH levels while running.

Fitted in a larger, Australian-designed housing, the D21 simplifies pool care—reducing chemical waste and giving you long-lasting, hassle-free performance.

Key Features

• All-in-one dosing for chlorine and pH via peristaltic pumps.
• Robust enclosure with built-in pump timer and expanded internal space.
• Continuous multi-electrode monitoring ensures rapid, accurate chemical correction.
• Audible & visual alarms safeguard against low chemical conditions.
• Efficient dosing logic alternates feed to prevent chemical interface; avoids overdosing.

Model Specification

*Information sourced from the official Pool Controls catalogue and verified retailer listings.

Frequently Asked Questions

Q1: Is the Chemigem D21 different to the D10?
Yes—the D21 uses the same peristaltic dosing as the D10 but has a larger enclosure with a built-in timer and is a newer, more integrated design.

Q2: How does dosing work?
The unit uses a multi-electrode to measure pH and ORP, then delivers acid or chlorine via peristaltic pumps until balance is restored. If both need correction simultaneously, dosing alternates to prevent mixing.

Q3: What safety features are included?
The D21 includes audible and visual alarms that alert you if chemical levels drift out of range or if reservoirs need refilling.

Q4: Can it control other pool accessories?
While the D21 catalog entry didn’t highlight accessory control, earlier Chemigem models do offer timed equipment control options. You may request confirmation from Pool Controls if needed.

Q5: What warranty applies?
Standard domestic warranty for parts is **2 years**, as per Pool Controls warranty terms.