FloraFlex? has engineered the highest-quality, cleanest and most pH stable nutrients on the market. V1 and V2 combine as a two-part water-soluble formula, providing all of the essential nutrients needed for vigorous plant growth throughout the entire vegetative stage. Use 1-2 teaspoons per 5 gallons of water (1-2 grams per gallon). Add V1 and then V2 to your water source throughout the entire vegetative stage. For optimal results, make sure the EC of your water is 0.2-0.3. The EC of your water can range up to, but should not exceed 0.7. At lower dosages, V1 and V2 can be used as a base along with other additives.