CO2 Starter Kit CO2

CO2 Starter Kit

£19.99 GBP
£19.99 GBP
Skip to product information
CO2 Starter Kit CO2
  • CO2 Starter Kit CO2
  • CO2 Starter Kit CO2
  • CO2 Starter Kit CO2
  • CO2 Starter Kit CO2
  • CO2 Starter Kit CO2
  • CO2 Starter Kit CO2
  • CO2 Starter Kit CO2
  • CO2 Starter Kit CO2
  • CO2 Starter Kit CO2
  • CO2 Starter Kit CO2
CO2 Starter Kit

CO2 Starter Kit

£19.99 GBP
£19.99 GBP
Only 2 left in stock – almost gone

✔️ Free delivery on orders over £20
🚚 Royal Mail Tracked 48h
⚡ DPD Express 24h Available

📦 Damaged or missing items?
Please contact us within 24 hours of delivery with clear photos of the packaging and contents so we can investigate and resolve the issue as quickly as possible.

🔒 All orders are carefully packed, documented before dispatch, and shipped with full tracking for added security

*All transit damage claims are reviewed in accordance with our Shipping Policy and courier delivery evidence.

The Dennerle Plants CO2 Starter Kit is a complete biosystem based on the principle of yeast fermentation — a simple, inexpensive and eco-friendly solution for boosting plant growth in small aquariums. Sugar is fermented in a plastic bottle to produce CO₂, which is then introduced directly into the aquarium via a diffuser.

Depending on room temperature (optimally 20–25°C), the kit supplies your plants with CO₂ for up to 2 months. No complex equipment, no cylinders — just a hassle-free way to maintain optimal CO₂ levels and encourage lush, healthy plant growth.

✅ Tracked UK delivery  |  ✅ Carefully packed  |  ✅ Suitable for Caridina & Neocaridina tanks

What's Included

  • Bio CO₂ Bottle
  • CO₂ Powder Mix
  • CO₂ Tubing transparent 4/6mm — 100cm
  • CO₂ Diffuser 17mm Membrane — 14cm
  • 2 Suction Cups
  • CO₂ Activator ×5
  • Instruction Manual

Quick Start Guide

  • Mix Bio CO₂ powder with 300ml water and leave to rest for 24 hours
  • Add Bio Activator with 200ml water
  • Connect the CO₂ diffuser to the hose — ready to go

Key Benefits

  • Up to 2 months of CO₂ supply per fill
  • Simple yeast fermentation — no cylinders or complex equipment
  • Safe, effective and eco-friendly
  • Ideal for small and nano aquariums
  • Complete kit — everything included to get started

Frequently Asked Questions

How long does the CO₂ last?
Up to 2 months depending on room temperature. Optimal performance is achieved between 20–25°C. Cooler rooms will slow fermentation and reduce CO₂ output.

When should I add the CO₂ Activator?
Refill the CO₂ Activator every 14 days or when CO₂ production drops to 5 bubbles per minute. This restarts the fermentation process and restores CO₂ output.

Is it suitable for large aquariums?
This kit is designed for small and nano aquariums. For tanks over 60 litres, a pressurised CO₂ system is recommended for consistent and controllable CO₂ delivery.

Is this CO₂ system safe for shrimp?
Yes, when used correctly. Maintain a stable CO₂ level and ensure adequate surface agitation to prevent CO₂ from building up excessively. Avoid running CO₂ at night when plants are not photosynthesising. Suitable for tanks housing Neocaridina and Caridina shrimp.

Can I get refills for this kit?
Yes. CO₂ Starter Refill packs are available separately in our store, so you can continue using the same equipment without purchasing a new kit.

How is this delivered?
All orders are dispatched from the UK with fully tracked delivery. The kit is carefully packed to ensure all components arrive intact and ready to use.

You may also like