FoxFarm Cultivation Nation pH Down — Citric Acid pH Adjuster for Soil & Hydroponics, 1 Quart

Manage the pH of your nutrient solutions with FoxFarm's Cultivation Nation pH Down. This citric acid-based adjuster helps you maintain the target pH window that supports healthy nutrient uptake in both soil and hydroponic setups. The experience is designed to feel straightforward and reliable, so you can focus on cultivating your plants rather than balancing chemistry. The 1 quart bottle provides ample adjustments for ongoing feeding.

What makes it fit for your grow room

Formulated with citric acid, this pH Down softens the acidity of your mix and nudges pH toward the ideal range. The result can be a more consistent environment for root zones and nutrient availability.

• Quick and easy pH fix: lowers the pH of your nutrient solution to help your plants thrive.
• Cross-method compatibility: ideal for both soil and hydroponic gardens.
• Fluid and forgiving usage: small additions and regular pH testing keep you in range.
• Trusted brand heritage: FoxFarm has provided greenhouse-tested fertilizers since 1984.

Simple steps to apply

• Shake well before each use to mix the citric acid evenly.
• Add small amounts of pH Down to your nutrient solution.
• Test the solution and adjust gradually until you reach pH 5.6–6.8.
• Re-test after changes and maintain consistency as your reservoir or feeding schedule shifts.

Whether you’re feeding in a reservoir, a tote, or a traditional soil mix, this pH Down provides a straightforward path to a balanced solution. Expect a smoother adjustment process, with the possibility of fewer fluctuations during daily feeding.