Pro Liquids MonoSil Stabilized Monosilicic Acid (OSA) - 5 Gal

Plant-Available Silicon for Sturdier Growth - 5 Gal Concentrate

Many silicon sources precipitate, shift solution pH or stay locked in forms plants cannot use. MonoSil is a stabilized monosilicic acid (orthosilicic acid, H4SiO4) liquid concentrate, the form plants absorb directly through roots or leaves. Silicon supports structural integrity and helps plants manage environmental stress.

The 5 Gal container suits growers who dose silicon regularly across multiple reservoirs, larger rooms or automated irrigation, and want fewer reorders than small bottles require.

Key Features & Benefits

• Stabilized monosilicic acid — supplies silicon in a plant-available form.
• Liquid concentrate — mixes into nutrient solutions and spray tanks.
• 2.7% monosilicic acid content — a stated concentration to help you plan dosing.
• Multiple systems — suitable for hydroponic, soilless and soil-based cultivation.
• Two application methods — fertigation through irrigation or foliar spray.

Who Should Use MonoSil

Growers running hydroponic, soilless or soil-based setups who want to add silicon to their feeding program. The 5 Gal size fits regular indoor growers and commercial operations with larger or automated systems.

About Pro Liquids MonoSil

MonoSil is a stabilized monosilicic acid (OSA) solution sold as a liquid concentrate with 2.7% monosilicic acid content. The recommended solution pH is 5.8 - 6.5. It is sold as one 5 Gal container.

Frequently Asked Questions

Q: What is monosilicic acid?
A: Monosilicic acid, also called orthosilicic acid (H4SiO4), is a small, soluble form of silicon. Plants can take it up directly, which is why it is used as a silicon supplement.

Q: Which growing systems can I use it in?
A: It is suitable for hydroponic, soilless and soil-based cultivation systems when used as directed. Follow the label for rates.

Q: What solution pH should I target?
A: The recommended solution pH is 5.8 - 6.5. Check and adjust your solution after mixing.

Q: How do I apply it?
A: You can deliver it through an irrigation system as fertigation, or spray it on leaves as a foliar application. Follow label directions for each method.

Q: How is this different from other silicon sources?
A: Stabilized monosilicic acid is generally more plant-available than insoluble silicon forms. Silicate products can affect solution pH, so check your mix whichever type you use.