How should I choose NPK RAW Calcium/Mag?

NPK RAW Calcium/Mag 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 Calcium/Mag 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 Calcium/Mag come in?

NPK RAW Calcium/Mag 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 returns within 30 days on unused, unopened NPK Industries products in original packaging. Contact us for return authorization before mailing a return; customer-paid return shipping applies unless the item arrived damaged or defective.

NPK RAW Calcium/Mag

SKU: NPK280

Size: 2oz

$12.85

$21.99

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Inventory may be in-store or supplier warehouse. Call 419-725-2450 to confirm same-day pickup.

Questions? Call 419-725-2450

Quick answer

NPK RAW Calcium/Mag 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 Calcium/Mag delivers 15% calcium and 3% magnesium in a fully water-soluble form using precisely formulated calcium nitrate and magnesium sulfate.

Calcium strengthens cell walls, promotes root growth, and helps prevent tip burn and blossom end rot, while magnesium is central to chlorophyll and drives photosynthesis.

The optimized 15:3 ratio ensures both nutrients are delivered harmoniously without lockouts, preventing powdery mildew by reinforcing cell structure and maintaining a clean, efficient root zone.

Ideal for correcting deficiencies and fine-tuning nutrient recipes in soil, coco, or hydroponic systems.

Weight: 2 lbs.

Dimensions: 14 x 10 x 7 in.

Available sizes: 2oz, 8oz, 2lbs, 10lbs, 25lbs.

Cal-Mag Supplement
Suitable for Veg
Genuine NPK Industries product
Brand: NPK Industries
Category: Nutrients & Fertilizers > Root Stimulants
5 selectable options

SKUNPK280

BrandNPK Industries

UPC0856606006393

Weight2 lbs

Dimensions14 x 10 x 7 in

TypeCal-Mag Supplement

Growth StageVeg

MaterialCoco

FormSoluble

CategoryRoot Stimulants

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NPK RAW Calcium/Mag

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