Colombo Bacto Start Filter StarterColombo Bacto Start supplies beneficial bacteria to help establish or restore biological filtration in freshwater aquariums. It is particularly useful when starting a new aquarium, after filter cleaning or when ammonia or nitrite readings are elevated.Key Benefits Supports the biological breakdown of ammonia and nitrite. Helps establish beneficial bacteria in aquarium filters. Suitable after aquarium setup or filter maintenance. Available in 100ml and 250ml sizes. Core Features Beneficial-bacteria filter starter. Designed for freshwater aquarium filtration. Supports filter recovery after thorough cleaning. Technical Specifications Product type: Aquarium filter starter. Water type: Freshwater aquariums. Available sizes: 100ml and 250ml. Application: New setups, filter maintenance and elevated ammonia or nitrite readings. Who is this product for?Colombo Bacto Start is suitable for freshwater fishkeepers setting up a new aquarium or re-establishing biological filtration after maintenance.Test water values regularly, carry out a water change if ammonia or nitrite is high, and use according to the product label.