Bio CO₂ aquarium fertilizer ARKA 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.