Powder Feeding BIO Bloom Nutrient by Green House Seed Company [500g] Powder Feeding BioBloom is a universal fertilizer that can be used for any grow media and for the flowering stage of any plant. Natural-minerals nutrients are immediately available for the plant and the organic nutrients are released slowly after being decomposed by microorganisms in the soil. The nutrient mix also contains beneficial fungus and bacteria that improves the microbial activity in soil. The fertilizer comes in a concentrated powder form, with 3 grams enough to make 1 litre substrate. Apply nutrient during flowering time. For soil based applications, one application is sufficient for an 8 week flowering period as the nutrients are slowly released over an 8 week period.