How should I choose NPK RAW Silica?

NPK RAW Silica should be matched to your growing media, water source, crop stage, feeding style, and pH/EC monitoring plan. Choose the exact size or variant before adding to cart. This page has 5 purchasable options, and price, stock, weight, and dimensions can change by size.

Can NPK RAW Silica ship in the United States?

Toledo Indoor Garden ships eligible products within the United States. Available shipping options, rates, and estimated delivery timing are calculated during checkout from the selected cart and destination address.

What sizes does NPK RAW Silica come in?

NPK RAW Silica is available in 5 options: 2oz, 8oz, 2lbs, 10lbs, 25lbs. Select your preferred size on the product page to see pricing and availability.

What is the return policy for NPK Industries products?

Toledo Indoor Garden accepts free 30-day parcel returns on unused, unopened NPK Industries products in original packaging after return authorization. Freight, LTL, oversized, special-order, or commercial items may require customer-paid return freight unless the item arrived damaged or defective.

NPK RAW Silica

SKU: NPK370

Size: 2oz

$24.99

Available to Order

Inventory may be in-store or supplier warehouse. Call 419-725-2450 to confirm availability, handling timing, or shipping.

Questions? Call 419-725-2450

Quick answer

NPK RAW Silica should be matched to your growing media, water source, crop stage, feeding style, and pH/EC monitoring plan.

Best fitGrowers building a nutrient program around a specific media type, water source, and crop stage.

Check before orderingChoose the exact size or variant before adding to cart. This page has 5 purchasable options, and price, stock, weight, and dimensions can change by size.

Grower tipStart from the label or feed chart, measure pH and EC, and increase strength only after plants show they are handling it.

Shopping guidance from Toledo Indoor Garden. Prices, availability, shipping rates, weights, and dimensions are verified during checkout.

NPK RAW Silica contains 45% silicon dioxide in a biogenic, pH-neutral, and highly water-compatible form, one of the highest concentrations available.

Silicon reinforces cell walls and strengthens stems, helping plants bear heavier buds and resist environmental stress including heat, drought, and pest pressure.

It provides non-toxic preventative protection against fungal infections and insect infestations while improving nutrient absorption, transport, and chlorophyll production.

Unlike harsh potassium silicates, RAW Silica is microbe-friendly and can even serve as a carrier for microbial inoculants in living soil systems.

Weight: 2 lbs.

Dimensions: 14 x 10 x 7 in.

Available sizes: 2oz, 8oz.