One-Step Water Conditioner. Extra-Thick Formula with PRO-COAT. The natural slime coat protector! Advanced protection for all freshwater fish. Removes harmful chlorine and chloramine. Detoxifies ammonia quickly and safely. Prevents infections and heals injured fish. Replenishes slime coat during stress. Removes dangerous heavy metals. Enriched with stabilized Vitamin C for disease resistance, and B-Complex for stress protection