The Bio Nova BN X-cel pro fertiliser is a stimulant of growth and flowering which increases the production and the quality of the harvest. It can be used with all fertilisers and on all substrates. Composition: - Amino Acids - Natural growth And flowering stimulants. - Beneficial bacteria. - Trace elements. - Enzymes. - Kelp. - Humic acids. Dosage: 100 ml per litre of the nutrient solution, from the first day up until the last week.