Tropical Bacto-Active 250ml – Aquarium Beneficial Bacteria

Tropical Bacto-Active 250ml is a live bacterial culture treatment designed to establish and maintain the nitrogen cycle in freshwater aquariums. It breaks down organic waste accumulating in substrates and filter media, clearing cloudiness and eliminating odours while keeping biological balance stable over the long term. It suits newly set-up tanks, mature aquariums recovering from disruption, and any system that needs its bacterial flora replenished.

What It Contains

The formula carries live, selected strains of biologically active bacteria specifically chosen for their ability to decompose organic matter. During the breakdown process, ammonium ions are released, which in turn stimulates the growth of nitrifying bacteria and accelerates the overall maturation of the aquarium.

Key Benefits

• Initiates and stabilises the nitrogen cycle in new and established aquariums
• Breaks down organic waste built up in substrate and filter media
• Clears water cloudiness and removes unpleasant odours
• Replenishes beneficial bacteria after filter cleaning or substrate maintenance
• Restores biological balance following antibiotic or medication treatments
• Works alongside Tropical Nitri-Active to significantly shorten aquarium maturation time, allowing fish to be introduced sooner
• Regular use prevents organic waste accumulation and supports long-term water clarity

When to Use It

• When setting up a new aquarium
• During the maturation period of a new tank
• After water changes in established systems
• Following periodic filter cleaning or media replacement
• When biological balance has been disrupted in a mature aquarium

Tropical Bacto-Active 250ml gives keepers a straightforward, reliable way to keep bacterial populations where they need to be — whether you're cycling a new build or getting an established tank back on track after maintenance.