2L Aquarium CO2 Generator System with Solenoid Valve & Diffuser

2L Stainless Steel Aquarium CO2 Generator System – Complete Reactor Kit

Elevate your planted aquarium with this professional-grade 2L CO2 Generator System. Built with a robust SUS304 stainless steel cylinder and an aluminum alloy valve, this kit delivers a steady, controllable flow of carbon dioxide to support lush, healthy aquatic plant growth — all while keeping your fish safe.

Key Features

• Premium Stainless Steel Construction: Thick, corrosion-resistant SUS304 stainless steel bottle body provides superior durability and reliability over standard plastic alternatives.
• Automatic Safety Valve: When internal pressure exceeds the maintenance threshold, the built-in safety valve opens automatically to prevent over-pressurization.
• Polymer Microporous Filter Element: Effectively blocks and absorbs impurities from the generated gas, delivering cleaner CO2 to your tank.
• Solenoid Valve Control: Easily regulate CO2 output with the included solenoid valve for precise, automated management.
• Efficient Bubble Diffuser: Breaks CO2 into fine micro-bubbles for maximum absorption and diffusion throughout your aquarium.
• Long-Lasting Reactions: Each batch of raw materials can sustain a continuous reaction for approximately 3–4 weeks.

Specifications

• Capacity: 2 Litres
• Material: Stainless Steel (SUS304) + Aluminum Alloy
• Dimensions: 340 × 102 mm
• Color: Silver
• Raw Material Ratio (2L): 200g citric acid + 200g baking soda + 300ml water

What's in the Box

• 1 × Carbon Dioxide Generator (2L Stainless Steel Cylinder)
• 1 × Aluminum Alloy Valve
• 1 × Water Pipe / Tubing
• 1 × Solenoid Valve
• 1 × Bubble Diffuser

Usage Notes

1. Add only one portion of raw materials + 300ml of water to the 2L bottle at a time.
2. During the reaction, condensation or water mist inside the bottle is completely normal due to the temperature drop.
3. Always keep the cylinder upright — never invert or tilt it during operation.
4. Important: Excess CO2 can harm fish. Start with a low rate of 1–2 bubbles per second and monitor your tank carefully.
5. Raw Material Replacement: Confirm pressure returns to 0 → remove bubble counter and air pipe → release remaining gas → turn off the remote control → disconnect the solenoid valve plug → loosen the valve counterclockwise → pour out waste liquid → rinse the inner bottle wall with clean water → add fresh raw materials.

Made in Mainland China.

For more guidance on maintaining a healthy planted aquarium environment, visit the EPA's WaterSense resource on aquariums.

Frequently Asked Questions

Q: How long does one batch of raw materials last in the 2L CO2 generator system?

A: With the recommended ratio of 200g citric acid + 200g baking soda + 300ml water, one batch typically sustains a continuous CO2 reaction for approximately 3–4 weeks, making it a cost-effective solution for planted aquarium enthusiasts.

Q: Is the 2L stainless steel CO2 cylinder safe for use with fish tanks?

A: Yes — the system includes an automatic safety valve that releases pressure if it exceeds safe levels. However, always start at a low CO2 output rate (1–2 bubbles per second) and increase gradually, as excessive CO2 can be harmful to fish. Monitor your tank's CO2 levels regularly.

Q: What materials are needed to operate the CO2 generator, and are they included?

A: The generator operates using citric acid, baking soda, and water — common, readily available household or aquarium-store ingredients. These consumable raw materials are not included in the kit; only the generator system components (cylinder, valve, tubing, solenoid valve, and bubble diffuser) are provided.

Q: Can I use this CO2 system with any size fish tank?

A: This 2L CO2 generator system is suitable for a wide range of planted freshwater aquariums. The solenoid valve and bubble diffuser allow you to adjust output to match the volume of your specific tank. Always calibrate the bubble rate to suit your aquarium size and plant density.