Calcium Soluble – Pulverized Limestone Calcium Carbonate

Pure Calcium Support for Strong Plants—Without Adding Magnesium

Calcium Soluble from The Soil Makers is a premium, finely pulverized calcium carbonate (limestone) powder formulated to increase calcium availability in both soil and hydroponic systems—without contributing magnesium. This makes it an ideal calcium amendment when magnesium levels are already sufficient or high, where dolomitic lime could disrupt nutrient balance.

With 97% passing a 100-mesh screen and 85% passing 200-mesh, this ultra-fine powder disperses quickly and evenly, allowing for faster availability and consistent results. Calcium Soluble delivers 38% elemental calcium with a calcium carbonate equivalent (CCE) of 95%, making it a highly effective and predictable calcium source.

Calcium is essential for cell wall strength, nutrient transport, root development, and overall plant structure. Deficiencies can lead to poor growth, blossom end rot, weak stems, and reduced yields. Calcium Soluble helps correct and prevent these issues without introducing excess magnesium that can interfere with potassium and calcium uptake.

Key Benefits:

• Pure calcium source: No added magnesium

• Ideal for high-magnesium soils: Superior to dolomitic lime in Mg-rich conditions

• Ultra-fine particle size: Fast dispersion and improved availability

• Versatile use: Suitable for soil blends, raised beds, containers, and hydroponics

• Supports plant structure: Strengthens cell walls and nutrient movement

• Trusted quality: Backed by The Soil Makers’ hands-on soil science expertise

Ideal Applications:

• Hydroponic systems needing calcium without magnesium interference

• Soil gardens & raised beds where magnesium is already abundant

• Fruiting crops like tomatoes and peppers prone to calcium deficiency

• Container gardening & potting mixes requiring a fine, consistent calcium amendment

Product Specifications:

• Elemental Calcium: 38%

• Calcium Carbonate Equivalent: 95%

• Particle Size: 97% @ 100 mesh | 85% @ 200 mesh

• Form: 100% pulverized limestone calcium carbonate

• Magnesium Content: Very low

Use Calcium Soluble as part of a balanced fertility program. Always follow application recommendations and soil test results to maintain optimal nutrient ratios.