Product information: -Composed of live bacterial strains -Aquarium cleaning by waste matter digestion is helped by the presence of numerous different strains of heterotrophic bacteria -Nitrates and phosphates are reduced -Enables water to be effectively purified -Prevents the spread of filamentous algae -The best way to start biological filtration in your fresh or marine water aquarium -Converts ammonia into nitrites - nitrites into nitrates - and - nitrates into nitrogen When should BioDigest be used ? -When you start a freshwater or a marine water tank -A vial each 15 days maintains an optimal purification of aquarium -To speed up the purification process, not increase doses but instead use the product more frequently How to use Start_Up ? -A vial for 200 liter aquarium water -Use a vial regularly every 15 days