DuraN is an efficient nitrogen fertilizer for aquatic plants containing a balanced amount of magnesium (Mg), calcium (Ca) and potassium (K). Provides nitrogen mainly in the form of NO3. It slightly increases the overall hardness of GH and the concentration of potassium. DuraN is recommended for freshly established, immature tanks and tanks in which chemical agents (e.g. anti-algae) have been used that may harm the development of beneficial bacterial flora.
1 ml of DuraN per 100 l gives approx. 1 ppm NO3, 0.15 ppm K.