ATM Colony Saltwater 1 Gallon – Live Nitrifying Bacteria for Reef Systems

Colony Saltwater is a professional-grade biological filtration solution formulated with authentic, true nitrifying bacteria. Unlike standard bacterial additives, Colony contains only aerobic autotrophic bacteria—the microorganisms responsible for converting toxic ammonia and nitrite into safer compounds in saltwater aquariums.

By delivering a fully pre-cultured bio-filter, ATM Colony dramatically reduces aquarium cycling time from weeks to just days. This makes it ideal for very large reef systems, public aquariums, coral farms, retail holding tanks, and high-bioload marine environments. It is also highly effective for restoring bio-filtration after medication, livestock additions, or biological media replacement.

Trusted by public aquariums worldwide, ATM Colony provides immediate biological stability, proven performance, and consistent results for demanding marine systems.

Key Features:

• Contains true nitrifying bacteria (aerobic autotrophs only)
• Rapidly establishes biological filtration
• Reduces cycling time from weeks to days
• Ideal for very large systems & professional use
• Safe for reef, fish-only & marine aquariums
• Trusted by public aquariums globally
• Easy to use with reliable, fast results

ATM Colony Saltwater 1 Gallon is a high-capacity live bacteria solution designed for large-scale reef systems and professional aquarium applications. Whether launching a new system or restoring bio-filtration after disruption, Colony delivers fast, dependable, professional-level results. Available now at Reef Freaks.