Ive been using FF Grow Big and Tiger Bloom, ive never really followed a chart or anything, i let the plants tell me what they need. I started with a half teaspoon per gallon with Grow Big about 3 weeks into vegg. Increased as needed but never got over a full teaspoon. I kept that up to about 2 weeks into flower and then started a teaspoon of the Tiger Bloom in each gallon with the Grow Big. Im 30 days into flower now and will prolly only use the Tiger Bloom at about 2 Teaspoons.