GLA PRO-DS-4 Dual Stage CO2 Regulator (4 Block Modular Manifold)

GLA PRO-DS-4 Dual Stage CO2 Regulator (Modular)

The GLA PRO-DS-4 Dual Stage CO2 Regulator is a professional-grade solution designed for advanced planted aquariums and multi-tank setups. Built for precision, stability, and long-term reliability, it delivers consistent CO2 output without the pressure fluctuations commonly found in single-stage regulators.

Engineered with a modular manifold system, the PRO-DS allows you to distribute CO2 to multiple aquariums while maintaining independent control of each line.

Who This Is For

• Advanced aquascapers and high-tech planted tanks
• Multi-aquarium setups (4 tanks)
• Users who demand maximum stability and control

If you are looking for the highest level of CO2 precision and a regulator that can scale with your setup, the PRO-DS is the ideal solution.

Why Dual Stage Matters

Dual-stage regulators reduce CO2 pressure in two steps, eliminating fluctuations as the cylinder empties. This prevents “end-of-tank dump” and ensures stable, consistent CO2 delivery from full to empty.

• No end-of-tank pressure spikes
• Stable working pressure throughout cylinder life
• Ideal for sensitive and high-demand aquariums

Modular Manifold System

The PRO-DS-4 includes a four-block manifold, allowing you to run four aquariums from a single regulator. Each block provides independent control and additional blocks can be added or removed as your system evolves.

• Four independent CO2 output lines
• Expandable multi-tank CO2 distribution
• Independent needle valve control per aquarium
• Clean, scalable system design

Key Features

• Dual Stage Regulator: Eliminates pressure fluctuations
• 4-Block Modular Manifold: Multi-aquarium CO2 distribution
• Precision Needle Valves: Independent control for each tank
• Integrated Solenoid: Automates CO2 on/off
• Dual Gauges: Monitor tank and working pressure
• Premium Construction: Built with high-grade pneumatic components

Performance & Design

• Laser precision metal-on-metal valve seat
• Multi-stage stainless steel micron filtration
• Integrated pressure relief valve (PRV)
• Pressure tested and leak checked prior to shipment
• Designed and assembled in the USA

Specifications

• Installation: CGA-320 (USA standard CO2 cylinders)
• Pressure Reduction: Dual Stage
• Output Pressure Range: 0–140 PSI
• CO2 Distribution: 4 aquariums (expandable)

What’s Included

• GLA PRO-DS-4 Dual Stage CO2 Regulator with 4-block modular manifold
• Nylon CO2 tank seal

The GLA PRO-DS-4 regulator is designed for aquarists who demand precision, scalability, and long-term performance. It delivers professional-grade CO2 control for multi-aquarium setups.

GLA CO2 Equipment

Designed and assembled in the USA, GLA CO2 regulators represent our highest standard of precision engineering and long-term reliability. Each unit is built using premium pneumatic components and rigorously tested to ensure consistent, dependable performance in demanding aquarium environments.

Trusted by aquascapers worldwide, GLA CO2 equipment has set a benchmark for quality—delivering professional-grade performance for high-tech planted aquariums and advanced multi-tank systems.

FAQ

What is the benefit of dual-stage regulation?
Dual-stage regulators prevent pressure fluctuations as the CO2 cylinder empties, ensuring stable output and eliminating end-of-tank dump.

Can this run multiple aquariums?
Yes. The PRO-DS-4 includes four independently controlled output lines.

Each block provides one CO2 output. This model is configured for four aquariums, but additional blocks can be added later if your setup expands.

Can I expand later?
Yes. Additional manifold blocks can be added as your system grows.

Is this compatible with other regulators?
No. The modular manifold system is designed specifically for GLA PRO-DS regulators.

Support & Warranty

• Lifetime Warranty: Regulator covered against manufacturing defects
• Lifetime Support: Expert assistance available
• Installation Guidance: We’re here to help you get started

Warranty

Limited Lifetime Warranty: The GLA PRO-DS CO2 Regulator is covered by a limited lifetime warranty against defects in materials and workmanship for the original purchaser. This warranty is non-transferable and applies only when the product is used in accordance with Green Leaf Aquariums, LLC (GLA) guidelines and standard operating practices.

This warranty does not guarantee product performance for the lifetime of the purchaser. Product lifespan may vary based on usage, installation, and operating conditions.

• Coverage applies only to manufacturing defects under normal use
• GLA reserves the right to repair, replace, or issue store credit at its discretion
• If a product is discontinued, a comparable replacement or credit may be provided based on product condition and age

Warranty Exclusions:

• Improper installation, misuse, neglect, or damage
• Modifications, alterations, or unauthorized repairs
• Use of improper tools or excessive force
• Normal wear and cosmetic damage that does not affect functionality

Important: A wrench should only be used to secure the regulator to the CO2 cylinder. Damage resulting from improper use of tools or incorrect installation methods is not covered under this warranty.

GLA is not responsible for damage caused by improper installation or use. However, repair services and support may be available for a fee.

CO2 cylinders, tubing, and other consumable or accessory items are not covered under the regulator warranty unless otherwise specified.

Proof of purchase may be required for all warranty claims.