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Brand: PowerSi

PowerSi Original Silicic Acid

PowerSi Original Silicic Acid

SKU: SKU:PS-SA-250

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Regular price $53.85 USD
Regular price $75.00 USD Sale price $53.85 USD
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PowerSi Original is a patented monosilicic acid concentrate that runs at 0.5 to 1 mL per litre and, unlike a potassium silicate, does not raise reservoir pH or leave residue behind. It is the form of silicon roots take up directly, which is why the rate is a fraction of what a silicate asks for.

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Power Si Original Skips the Conversion Step

Most silica in a reservoir arrives as potassium silicate and has to convert before roots can use it. Power Si Original is already monosilicic acid, the form plants absorb, held stable by a patented matrix. The declared analysis is 1.22-2.14-0.9 with micro and macronutrients carried alongside. Two practical consequences follow from that chemistry. It does not raise water pH. It also leaves no residue in the reservoir, which is what growers on drip and NFT lines notice first. Stalks thicken and lateral branching picks up over a cycle rather than overnight.

Feeding Chart and Foliar Rates for Monosilicic Acid for Plants

The manufacturer chart is week-based and modest. Clones and the first two weeks of veg take 0.5 mL per litre, moving to 1 mL from week three onward. Bloom mirrors it: 0.5 mL through weeks one to three, then 1 mL from week four to eight. Foliar maintenance is 1 mL per litre, or 4 mL per gallon. That doubles to 2 mL per litre when a crop needs repairing. There is also a 6 mL per five gallons rate specifically to slow vertical stretch. Add it to clean water before any other nutrient. One honest note: this is a premium concentrate, and a grower judging silicon purely on cost per gallon will get more from a potassium silicate.

Key Features

  • Patented monosilicic acid matrix: The silicon arrives in the form roots absorb, so nothing has to convert in the reservoir first.
  • No pH rise, no reservoir residue: It skips the pH correction and the sediment that alkaline silicates leave in lines and emitters.
  • 0.5 to 1 mL per litre by week: Rates step up from clones through week three of veg and again at week four of bloom, so the bottle lasts.
  • Foliar at 1 mL/L maintenance, 2 mL/L repair: The same concentrate covers both root and leaf application without a second product.
  • 6 mL per 5 gallons to slow stretch: A specific published rate for controlling vertical growth rather than a guessed-at heavier dose.
  • 1.22-2.14-0.9 with micro and macronutrients: The analysis is declared, so it can be accounted for in a feed program instead of treated as an unknown.

Technical Specifications

Specification Value
NPK 1.22 - 2.14 - 0.9
Silicon Form Patented stabilized monosilicic acid
Veg Rate 0.5 mL/L weeks 1-2, 1 mL/L from week 3
Bloom Rate 0.5 mL/L weeks 1-3, 1 mL/L weeks 4-8
Clone Rate 0.5 mL/L
Foliar Maintenance 1 mL/L (4 mL per gallon)
Foliar Repair 2 mL/L (8 mL per gallon)
To Slow Vertical Growth 6 mL per 5 gallons
Mixing Add to clean water before any other nutrient
Effect on pH Does not raise water pH
Reservoir Residue None
Available Sizes 250 mL, 500 mL, 1 L, 5 L, 20 L, 50 L