Flora Viv Grow is a high quality, bio-available, fertilizer for freshwater planted aquariums containing nitrogen in a safe form for aquatic use. Flora Viv Grow also contains kelp extract, known to accelerate freshwater plant growth. Whereas some companies use Urea as an inexpensive nitrogen source, Flora Viv Grow utillizes only sodium nitrate because urea, the main source of nitrogen in urine, can release toxic ammonia into the aquarium, which may irritate fish gills and cause sickness and death at pH values over 7.0. Flora•Viv products contain no polycycloglutaracetal or glutaraldehyde. Use Flora Viv multinutrient fertilizer as your main plant nutrient source, then use this product, Flora Viv Grow to provided added nitrogen and kelp extract to accelerate plant growth and to support heavily planted aquariums. Do not exceed 25 mg/L (ppm) nitrate in the aquarium. Simultaneous use of Bacter Gen F to establish and sustain growth of proper microorganisms and recycle aquarium nutrients will greatly benefit all plants and the aquarium ecosystem. The use of Flora Viv Prolifera will provide additional carbon for heavily planted aquariums. Growth of all photosynthetic organisms also requires strong lighting of proper spectrum. Consult your lighting supplier for assistance in the proper type of light, and photo periods for the plants that you are growing. Be sure to ask lots of questions to get the very best lighting system for your aquarium.