Aquarium Plant CO₂ Kits & Accessories47 products

Enhance plant growth and colour with our complete range of CO₂ Kits & Accessories for planted aquariums.
CO₂ (carbon dioxide) is essential for lush, healthy aquatic plant growth — it helps plants photosynthesise efficiently, reduces algae, and creates a balanced ecosystem.

Our collection includes everything from full CO₂ systems to replacement parts and upgrades, suitable for both beginners and advanced aquascapers. Whether you’re setting up your first planted tank or fine-tuning a high-tech aquascape, we have the right solution for your setup.

In This Category You’ll Find:

• 💨 Complete CO₂ Kits – all-in-one solutions with cylinder, regulator, diffuser & tubing

• ⚙️ CO₂ Regulators – precision control for consistent gas flow

• 💎 CO₂ Diffusers & Reactors – ensure optimal gas dissolution into the water

• 🔩 CO₂ Tubing & Fittings – durable, pressure-resistant components for secure connections

• 🔄 Refills & Cartridges – easy replacements for disposable or refillable systems

• 🔋 Accessories & Check Valves – prevent backflow and maintain safe operation

Why Use CO₂ in Your Aquarium:

• Promotes dense, vibrant plant growth

• Enhances colouration and leaf structure

• Helps prevent algae by maintaining nutrient balance

• Creates a more stable, natural ecosystem for fish and shrimp

Compatible With:

• All planted aquariums, from nano to large setups

• Popular brands including Tropica, Oase, Hydor, and Seachem

• Both pressurised and DIY CO₂ systems