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FloraFlex® has engineered the highest-quality, cleanest and most pH stable nutrients on the market. B1™ and B2™ combine as a two-part water-soluble formula, providing all of the essential nutrients needed for vigorous plant growth throughout the entire flowering stage. Use 1-3 teaspoons per 5 gallons of water (1-2 grams per gallon). Add B1™ and then B2™ to your water source throughout the entire flowering 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, B1™ and B2™ can be used as a base along with other additives.