Water-Soluble Potassium Fertilizers

Potassium is essential for water regulation, enzyme activation, sugar transport, and overall crop quality. Custom Hydro stocks the purest water-soluble potassium sources available for professional fertigation, hydroponic, and foliar programs.

Potassium Sources Available

  • Potassium sulfate (SOP) — chloride-free K with sulfur, available in 0-0-50, 0-0-51, 0-0-52, and 0-0-53 analyses depending on grade and brand
  • Potassium nitrate (KNO3 13-0-46) — chloride-free K with nitrate-N
  • Mono-potassium phosphate (MKP 0-52-34) — K with phosphorus, lowest salt index
  • PeKacid 0-60-20 — acidifying K+P source for high-pH water
  • Potassium chloride (MOP 0-0-61) — high-analysis K for non-sensitive crops
  • Potassium silicate — K with bioavailable silicon

Key Features

  • 100% water-soluble — compatible with all fertigation and hydroponic systems
  • Chloride-free options for sensitive crops and closed-loop systems
  • Near-zero sodium options (Haifa Multi-K RECI) for recirculating hydroponics
  • Multiple K forms for precise nutrient and pH management

Ideal Applications

  • Hydroponic nutrient solutions
  • Fertigation: drip, micro-jet, center pivot, sprinklers
  • Foliar spray programs
  • Soluble NPK blends and liquid fertilizer production

Serving Arkansas, Kansas, Missouri and Oklahoma. Shipping Nationwide! Wholesale to the public!