Bio CO₂ aquarium fertilizer – ARKA Bio-CO₂ 473 ml – liquid CO2 source with bacteria & humic acids – boosts plant growth & vibrant colours – nitrate-free – for freshwater tanks & aquascapes

• Natural CO₂ supply for planted tanks – produces bioavailable CO₂ via bacteria & humic substances – ideal for aquascaping, community tanks or nano setups – simple liquid dosing, no pressurised system needed.
• Supports vibrant growth & stronger roots – improves nutrient uptake, photosynthesis & oxygen levels – visibly healthier leaves, more colour intensity & balanced tank conditions for fish & shrimp.
• Quick start: 10 ml per 100 l on day one, then 2 ml every 1–2 days – dosage can be adjusted to light intensity, planting density & plant type – perfect for hobbyists & aquascapers alike.
• Saves space & cost – no bottles, hoses or night shut-off required – safe, clean & user-friendly alternative to conventional CO₂ systems – suitable for beginners & professionals.
• Trusted ARKA quality – nitrate-, phosphate- & metal-free – biologically safe for fish, shrimp & sensitive species – fully compatible with ARKA liquid plant fertilizers & popular planted tank routines.

Product Description Bio-CO² for your plantsA specially developed care product for all plants in freshwater aquariums. A special formula of micro-organisms and natural carbon improves nutrient uptake, resulting in better plant well-being and growth. Features and benefits:- Humic acid as a carbon source. - Contains natural microorganisms. - Increases nutrient uptake by plants. - Maintains the natural balance of plants. - Increases the efficiency of substrate. - Improves the well-being and growth of plants. - Bio-CO² contains a combination of naturally occurring micro-organisms that increase nutrient uptake in plants. The photosynthetic organisms are absorbed through the roots and vascular system of plants and help to better utilise and store nutrients. The humic acid contained in Bio-CO² serves as a natural carbon source for plants due to its high carbon content. Dosage: Start dosage: Add one tsp (5ml) per 40 L. water. Follow-up dosage: Add one tsp (5ml) per 200 L. of water daily or every other day. Water daily or every other day. Directions Start dosage: Add one tsp (5ml) per 40 L of water. Follow-up 200 water daily or every other day. Water Safety Warning Keep out of reach of children. Avoid contact with skin and eyes. In case of accidental contact, rinse immediately with plenty of water. Do not ingest. Store in a cool, dry place away from heat sources and direct sunlight. Keep away from food and feed. Dispose of according to local regulations.