ZISS Aqua - CO2 Generator Unit- ZC-II

Ziss CO2 ZC-II Generator

Precise, Reliable & Safe CO₂ Enrichment for Planted Aquariums

The Ziss CO2 ZC-II Generator is a revolutionary, patented chemical neutralisation system designed to deliver a stable and efficient source of CO₂ for planted aquariums.

Unlike traditional yeast-based CO₂ systems, the ZC-II provides:

• Instant start-up

•  Precise drip-rate control

•  Temperature-independent operation

• Stable and predictable CO₂ output

This ensures consistent plant growth and a healthy, thriving aquatic ecosystem.

How It Works

The Two-Part System

The unit contains two separate chambers:

#1 Up Solution (Top Chamber)
Contains the liquid acid solution.

#2 Down Powder (Bottom Chamber)
Contains the alkaline powder.

The Reaction

Each time a single drop of the liquid solution contacts the powder, a controlled chemical reaction occurs, instantly producing carbon dioxide (CO₂) — the same gas plants use for photosynthesis.

The Drip Control System

The key to the ZC-II’s precision is its Speed Control Valve (#3).

Rather than mixing everything at once, the liquid drips slowly into the powder chamber. By adjusting the drip rate (for example, one drop every 5–8 minutes for the 160g kit), you control:

• CO₂ production rate

• Internal pressure stability

• Overall system consistency

This produces a steady, safe, and reliable CO₂ supply to your aquarium via tubing and diffuser.

Installation Guide

Follow these steps carefully for optimal performance:

 Preparation

Fully close the Speed Control Valve (#3).

Add Powder

Pour the entire contents of the ZCR-160 #2 Down Powder pack into the Powder Tank (#2).

Add Water & Prepare Seal

• Add approximately 200ml of water into the Powder Tank (#2).

• Rinse the Main Red Rubber Head Seal with clean water to remove any refill residue and ensure a proper airtight seal.

Assemble Tanks

Attach the UP Solution Tank (#1) securely onto the Down Tank (#2).

Add Liquid

• Remove the CO₂ Outlet Cap (#4).

• Carefully pour the #1 Up Solution into the UP Solution Tank.

 Install Diffuser

• Replace the CO₂ Outlet Cap (#4).

• Place the Ziss ZD-200 Diffuser inside your aquarium.

Adjust Flow Rate

Slowly open the Speed Control Valve (#3) to begin dripping through the drip hole (#5).

For the 160g kit:
👉 Aim for 1 drop every 5–8 minutes.

Mark Valve Position

Mark the valve position with a permanent marker for easier future setups.

Verify Drip Rate

Double-check that the drip rate remains stable and consistent.

Troubleshooting

❗ No CO₂ Production

If the solution is dripping but the diffuser is not releasing CO₂:

1. Detach the UP Solution Tank (#1).

2. Rinse the Main Red Rubber Head Seal thoroughly with water.

3. Reassemble and restart the system.

A clean seal ensures proper pressure buildup and gas release.

Why Choose the ZC-II?

• ✔ More stable than yeast systems

• ✔ No temperature fluctuation issues

• ✔ Easy refill process

• ✔ Safe, controlled CO₂ generation

• ✔ Ideal for planted aquariums of various sizes

The Ziss CO2 ZC-II Generator offers a professional-grade CO₂ solution with simple operation and dependable results — perfect for aquascapers who demand precision and consistency.