Sulfate of Potash 0-0-51 — Greenhouse Grade Potassium Sulfate, 20 lb.
The go-to size for serious home growers and small commercial operations. This 20 lb. pail of greenhouse-grade sulfate of potash gives you enough to run a full season of reservoir fills, custom nutrient programs, or fertigation schedules — without the footprint of a full bulk bag.
Why Growers Choose This SOP
- 51% K₂O — high-concentration, nitrogen-free potassium for precise crop nutrition
- 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
Ideal Applications
Use in hydroponic reservoirs, drip fertigation, foliar programs, and custom nutrient blends. Particularly effective during flowering and fruiting when potassium demand peaks and nitrogen must remain controlled.
Documents
Sulfate of Potash 0-0-51 GG 20 lb.
Sulfate of Potash 0-0-51 GG 20 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.
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Premium Quality
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Highest Purity
Never Compromise on the Quality of Inputs.
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Crop Specific
Customized Fertilizer for your Favorite Crops.
