RAW Nitrogen contains 20% ammonium nitrogen (N) in a water-soluble form. RAW Nitrogen does not contain nitrates or urea, which enables it to be applied at all stages of growth and bloom. Plants take up two forms of nitrogen: nitrate N and ammonium N. RAW Nitrogen is ammonium nitrogen only. It can also be used as a foliar feed and during bloom unlike nitrate N. RAW Nitrogen is ideal for boosting nitrogen (N) levels, treating deficiencies and creating optimal recipe solutions. A 2 oz package of RAW Nitrogen makes up to 200 gallons, an 8 oz package makes up to 800 gallons and a 2 lb package makes up to 3200 gallons.