Humboldts Secret pH Down | Liquid pH Plant Balancer for Soil & Hydroponics Growing System (1 Gallon)Brand: Humboldts Secret Features: Increased Nutrient Absorption: Created to bring pH levels down effectively, the Humboldts Secret pH Down Plant Nutrients Balancer creates a balanced and optimum pH level in your plants growth medium to maximize nutrient uptake and helps them flourish. Cost Savings: You need just a few drops of this concentrated solution for maximum effectiveness which means one bottle can last a very long time. Better output, with