- Bacto balls are impregnated with the unique Colombo bacteria for marine aquariums.|$|- DNA screening techniques have been used to select the best strains.|$|- Use Bacto balls for clean and clear water, optimal biology, healthy corals and improved polyp expansion.|$|- Algae growth is also reduced and organic waste decomposed.|$|- Add the balls to the dispenser, it can be positioned in the tank or sump.|$|- Over dosing is not possible, a higher dosage will even enhance its efficiency.|$|- Size:One Size.|$|- Gender: Unisex Adult