Special Blend Control

For large aquariums: Reduces nitrate & organic waste naturally – maintains stable biological balance without chemicals. Improves clarity & freshness: Removes debris & odours – supports healthy oxygen levels and biofiltration. Long-term biological stability: Strengthens natural bacteria activity – ideal after maintenance or water changes. Easy dosing: Start 25 ml / 100 L, weeks 2-4 15 ml / 100 L, then 7.5 ml / 100 L every 14 days – no refrigeration needed. ARKA quality: Premium biotechnology for safe and natural water balance – trusted by professionals.