Peters Professional Acid Special 21-7-7 - 25 Pounds

Produce healthy acid-loving crops with this formula’s high potential acidity Offsets high water alkalinity or lowers pH levels in growing media C (Customizing) component can be used with a variety of B (Base) formulations Contains a full range of essential micronutrients plus extra iron to promote greening 21-7-7, excellent choice for Water Types 3 and 4