Pro-Cal is a highly beneficial calcium, magnesium and iron plant nutrient supplement. This recommended application rate normally is sufficient to make up for any deficiencies in most soil or hydroponic formulas. Pro-Cal is more concentrated than competitive products and helps increase overall density in your plants. It remedies yellowing plants and helps resist disease.*Not for Sale or Use in the state of California
- Hydro Fuel Pro-Cal 1 Liter