• Haifa SOP GG 0-0-51 55 lb.
  • Haifa SOP 0-0-51 bag back
  • Haifa SOP soluble fertilizer or fertigation and hydroponics.
  • Haifa SOP 0-0-51 bag v2
  • Description
  • Product Features
  • Specifications

Haifa SOP GG 0-0-51 — Greenhouse Grade Potassium Sulfate, 55 lb. Bag

When your operation demands professional-grade potassium nutrition at scale, Haifa SOP GG 0-0-51 delivers. This 55 lb. bag is the standard choice for commercial greenhouse growers, hydroponic facilities, and fertigation programs that require a reliable, high-purity potassium sulfate with consistent performance batch after batch.

Why Growers Choose Haifa SOP

  • 51% K₂O — high-concentration, nitrogen-free potassium for precise crop nutrition at any growth stage
  • 18% sulfate-sulfur — immediately plant-available, no soil conversion needed
  • Rapid, complete dissolution — 100 kg dissolves in 1,000 L of water in minutes at 20°C with no insoluble residue
  • Low chloride, low salt index (46) — safe for salt-sensitive crops including tomatoes, peppers, cucumbers, and cannabis
  • Nitrogen-free — ideal for late-stage fruiting, ripening, and K-loading phases without disrupting N balance
  • Lowers stock solution pH — helps maintain optimal pH range in fertigation and hydroponic systems

Ideal Applications

Use in hydroponic reservoirs, drip fertigation, NFT, DWC, and foliar programs. Particularly effective during flowering and fruiting when potassium demand peaks. Compatible with most water-soluble fertilizers for custom nutrient formulations.

Documents

  • High Analysis: Fertilizer grade 0-0-51
  • Pure: Low in sodium, chloride and heavy metals.
  • Water Soluble: High solubility, ideal for making concentrated stock solutions for automatic fertilizer injection systems.
Haifa SOP Greenhouse Grade Fertilizer 
Guaranteed Analysis

AnalyteUnitsTypical
Water Soluble Potassium (as K2O)

%

51.0
Water Soluble Potassium (as K)

%42.3
SO3%45
S%18

Haifa SOP GG 0-0-51 55 lb.

Haifa SOP GG 0-0-51 55 lb.

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$41.75
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$0.76 lb
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What Makes Us Different

At the leading edge of the market, Custom Hydro stands out by providing the growing industry with fertilizers that are not only of premium quality but also feature innovative
solutions tailored for the unique needs of hydroponic and organic farming practices.

  • Premium Quality

    The Mark of Trusted Quality.

  • Highest Purity

    Never Compromise on the Quality of Inputs.

  • Crop Specific

    Customized Fertilizer for your Favorite Crops.