Bloom by Humboldt Nutrients is a superior formulat that with boost phosphorus levels and improve plant photsynthesis. What this means is, you will notice improved crop quality and yield in your grow area. As Bloom also improves metabolism and genetics, fruiting and flowering will also increase. Bloom by Humboldt Nutrients is that perfect balance of Phosphorus and Potassium for your garden . Quantity: 1 Gallon.