VitaLink ESSENTIALS pH Down is a quality adjuster necessary to control the pH of nutrient solutions.

This concentrated solution (81% phosphoric acid) is formulated for the professional grower. Use in small controlled doses to adjust the pH level of nutrient solutions down. Mix thoroughly and measure with a calibrated pH meter to attain the desired pH reading.

Available in 250ml and 1L bottles.

Please NOTE: Do not store pH Up & pH Down next to each other.