Water Soluble Sulfur

Water-Soluble Sulfur Fertilizers

Sulfur is an essential macronutrient required for protein synthesis, enzyme function, and chlorophyll formation. It is frequently deficient in sandy soils, high-production systems, and programs relying heavily on sulfur-free nitrogen sources. Custom Hydro stocks a full range of water-soluble sulfur sources for professional fertigation, hydroponic, and foliar programs.

Sulfur Sources Available

• Magnesium sulfate (MgSO4) — S with magnesium; the most widely used sulfur source in fertigation
• Potassium sulfate (SOP) — S with chloride-free potassium
• Potassium magnesium sulfate (K-Mag / Sul-Po-Mag) — S with K and Mg in one compound
• Ammonium sulfate — S with ammonium-N; acidifying nitrogen source
• Calcium sulfate (gypsum) — S with calcium for soil amendment

Key Features

• 100% water-soluble — compatible with all fertigation and hydroponic systems
• Multiple S forms paired with complementary macronutrients
• Suitable for all crops, growing media, and production systems

Ideal Applications

• Hydroponic nutrient solutions
• Fertigation: drip, micro-jet, center pivot, sprinklers
• Foliar spray programs
• Soil amendment for S-deficient fields