Pro Liquids MonoSil™ Monosilicic Acid

MonoSil is a stabilized monosilicic acid (orthosilicic acid, H₄SiO₄) solution formulated to provide plant-available silicon in its most bioavailable form. Unlike potassium silicate powders that must hydrolyze in solution, monosilicic acid is immediately plant-available — ideal for precision hydroponic and foliar programs.

Guaranteed Analysis

• Monosilicic Acid (H₄SiO₄): 2.7%
• Derived from monosilicic acid (orthosilicic acid)
• Form: liquid concentrate

Key Features

• Immediately plant-available silicon — no hydrolysis required
• Strengthens cell walls and improves structural integrity
• Enhances tolerance to heat, drought, salinity, and disease pressure
• Suitable for hydroponics, soilless, and soil-based systems
• Do not mix concentrate with calcium products
• Always premix into water before adding other nutrients

Application Methods

• Fertigation: delivered through irrigation system directly to root zone
• Foliar: apply directly to leaves for rapid absorption
• Soil drench: pour diluted solution around plant base
• Top watering: apply over soil surface with watering can or hose

Directions for Use

• Always premix into water before adding other nutrients
• Maintain nutrient solution pH between 5.8–6.5
• Conduct a jar test when mixing with other products

Packaging Options

• 100 mL
• 1 gallon
• 5 gallon

Heavy Metals Compliance

Metal content information available at aapfco.org/metals.htm.

Safety

• Keep out of reach of children and pets
• Wear gloves and eye protection when handling
• Causes skin and eye irritation — rinse with water if contact occurs
• Store sealed in a cool, dry place