GLA GRO Aquarium CO2 Regulator (DIN477)

GLA GRO Planted Aquarium CO2 Regulator (DIN477)

The GLA GRO CO2 Regulator (DIN477) is a compact, precision-built single stage regulator designed for reliable CO2 delivery in single aquarium setups. Built with high-quality pneumatic components and assembled to strict standards, it provides consistent output and dependable performance for planted aquariums.

This DIN477 version is specifically designed for international CO2 cylinders used in Europe, the UK, Australia, and other regions using DIN-standard valves.

Designed for simplicity and consistency, the GLA GRO delivers stable CO2 output for single aquarium setups, making it a reliable choice for aquarists seeking straightforward performance without unnecessary complexity.

Who This Is For

• Aquarists using DIN477 CO2 cylinders (EU, UK, AU, and international markets)
• Single aquarium setups
• Users looking for a compact, straightforward CO2 regulator

Key Features

• Single Stage Design: Reliable CO2 delivery for single aquarium setups
• DIN477 Compatibility: Designed for international CO2 cylinders (EU, UK, AU)
• Precision Needle Valve: Micro-adjustment for accurate and stable CO2 dosing
• Integrated Solenoid: Automates CO2 on/off with a timer or controller
• Premium Bubble Counter: Includes integrated check valve to protect internal components
• Pressure Relief Valve (PRV): Built-in safety feature for system protection
• Compact Footprint: Clean installation with minimal space requirements
• Tested in the USA: Pressure tested and leak checked prior to shipment

Performance & Design

• Laser precision metal-on-metal valve seat for consistent regulation
• Multi-stage micron filtration at inlet and outlet
• 360° adjustable needle valve for flexible installation
• Durable aluminum regulator body with premium pneumatic components
• Engineered to meet GLA performance standards and tested to ensure consistent, dependable operation.

Specifications

• Installation: DIN477 (EU, UK, AU standard CO2 cylinders)
• Pressure Reduction: Single Stage
• Output Pressure Range: 0–70 PSI
• CO2 Distribution: Single Aquarium

What’s Included

• GLA GRO CO2 Regulator (DIN477) with integrated solenoid and bubble counter with check valve
• GLA OEM CO2 tank seal

The GLA GRO CO2 Regulator (DIN477) is designed for aquarists who value reliability, simplicity, and clean installation. It delivers consistent CO2 control for planted aquariums without unnecessary complexity.

GLA CO2 Equipment

GLA CO2 regulators are engineered to meet our exacting standards for precision, reliability, and long-term performance. Each unit undergoes inspection and testing in the USA to ensure consistent, dependable operation in demanding aquarium environments.

Trusted by aquascapers worldwide, GLA CO2 equipment has set a benchmark for quality—delivering professional-grade performance for aquarists who demand precision, reliability, and long-term results.

FAQ

What tanks does this fit?
This regulator is designed for DIN477 CO2 cylinders commonly used in Europe, the UK, Australia, and other international regions.

Is this a dual-stage regulator?
No. The GLA GRO is a single-stage regulator designed for simplicity and reliability in single aquarium setups.

Can this run multiple aquariums?
Yes, with the addition of a compatible CO2 splitter. For best performance in multi-tank setups, a dual-stage regulator is recommended.

Is this suitable for beginners?
Yes. The GLA GRO is commonly chosen by both beginner and experienced planted aquarium hobbyists seeking a compact, reliable, and straightforward CO2 system.

Optional Add-On: CO2 Splitter (Multi-Tank Expansion)

Expand your GLA GRO CO2 System to run multiple aquariums with the GLA CO2 Splitter. Designed specifically for compatibility with GLA GRO regulators, this add-on allows you to distribute CO2 to additional tanks from a single regulator.

Each outlet includes its own precision needle valve, allowing independent control of CO2 flow to each aquarium for optimal tuning and plant growth.

• Expands CO2 distribution to multiple aquariums
• Independent needle valves for precise control per tank
• Easy installation directly onto GLA GRO regulators
• Designed for seamless compatibility with GLA GRO systems

View CO2 Splitter Add-On →

Support & Warranty

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

Limited Lifetime Warranty: GLA CO2 regulators are 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.

Warranty coverage applies only to products purchased directly from greenleafaquariums.com or authorized sales channels. Proof of purchase may be required for all warranty claims.

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 sole 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, cartridges, and other consumable or accessory items are not covered under the regulator warranty unless otherwise specified.