Water Soluble Phosphorus

  • DiPotassium Phosphate 0-41-54

    DiPotassium Phosphate 0-41-54

    Acid-free phosphate fertilizer for Nutrigation™ and foliar application   Soil pH is...

    DiPotassium Phosphate 0-41-54

  • Haifa GrowClean 5-31-40

    Haifa GrowClean 5-31-40

    Haifa GrowClean - Sodium free phosphate fertilizer with cleaning effect Keeping the...

    Haifa GrowClean 5-31-40

  • MagPhos 0-55-18 4.2% magnesium

    MagPhos 0-55-18 4.2% magnesium

    MagPhos 0-55-18+4.2Mg is a Nitrogen-free, white crystalline, fully soluble, free-flowing Magnesium fertigation...

    MagPhos 0-55-18 4.2% magnesium

  • MonoAmmonium Phosphate 12-61-0

    MonoAmmonium Phosphate 12-61-0

    Water-soluble, hydroponic grade MAP 12-61-0 fertilizer. MAP is a whitish crystalline powder,...

    MonoAmmonium Phosphate 12-61-0

  • MonoPotassium Phosphate 0-52-34

    MonoPotassium Phosphate 0-52-34

    Mono-Potassium Phosphate (MKP) 0-52-34 FertilizerMKP is the most concentrated straight fertilizer containing...

    MonoPotassium Phosphate 0-52-34

  • PeKacid 0-60-20 fertilizer

    PeKacid 0-60-20 fertilizer

    PeKacid 0-60-20 is ICL SF’s patented water-soluble PK fertilizer which is ideal...

    PeKacid 0-60-20 fertilizer

Water-Soluble Phosphorus Fertilizers

Phosphorus is essential for root development, energy transfer, and reproductive growth. Custom Hydro stocks a full range of water-soluble phosphorus sources for professional fertigation, hydroponic, and foliar programs.

Phosphorus Sources Available

  • Mono-potassium phosphate (MKP 0-52-34) — highest-concentration P+K source
  • Monoammonium phosphate (MAP 12-61-0) — ammonium-N with high phosphorus
  • PeKacid 0-60-20 — acidifying phosphorus source for high-pH water
  • Haifa GrowClean 5-31-40 — polyphosphate with system-cleaning properties

Key Features

  • 100% water-soluble — compatible with all fertigation and hydroponic systems
  • Multiple P forms for precise nutrient and pH management
  • Low salt index options available for sensitive crops and foliar use
  • Nitrogen-free options for precise N management

Ideal Applications

  • Hydroponic nutrient solutions
  • Fertigation: drip, micro-jet, center pivot, sprinklers
  • Foliar spray programs
  • Soluble NPK blends and liquid fertilizer production
  • ICL PeaK MKP 0-52-34 fertilizer 50 lb. BAG ICL PeaK MKP 0-52-34 fertilizer 50 lb. BAG BACKSIDE
    ICL PeaK MKP 0-52-34 Fertilizer 50 lb
    Sold out
    ICL PeaK MKP 0-52-34 Fertilizer 50 lb
    $75.67
    $110.00 $75.67
    $1.51 lb
    Sold out
  • ICL PeaK MKP 4 lb. MKP Mono-Potassium Phosphate 4 lb
    MKP Mono-Potassium Phosphate 4 lb
    Grower Price
    MKP Mono-Potassium Phosphate 4 lb
    $18.66
    $37.00 $18.66
    $4.67 lb
    Grower Price
  • Haifa MKP 0-52-34 Fertilizer 50 lb. Haifa MKP 0-52-34 Fertilizer 55 lb
    Haifa MKP 0-52-34 Fertilizer 55 lb
    Grower Price
    Haifa MKP 0-52-34 Fertilizer 55 lb
    $74.73
    $99.00 $74.73
    $1.36 lb
    Grower Price
  • ICL PeaK MKP 1 lb. MKP Mono-Potassium Phosphate 1 lb
    MKP Mono-Potassium Phosphate 1 lb
    Grower Price
    MKP Mono-Potassium Phosphate 1 lb
    $8.48
    $16.96 $8.48
    $8.48 lb
    Grower Price
  • ICL PeaK MKP 20 lb. MKP Mono-Potassium Phosphate 20 lb
    MKP Mono-Potassium Phosphate 20 lb
    Grower Price
    MKP Mono-Potassium Phosphate 20 lb
    $47.28
    $94.56 $47.28
    $2.36 lb
    Grower Price
  • Monoammonium Phosphate 12-61-0 fertilizer 4 lb.
    Monoammonium Phosphate 12-61-0 fertilizer 4 lb.
    Monoammonium Phosphate 12-61-0 fertilizer 4 lb.
    $20.96
    $0.00 $20.96
    $5.24 lb
  • PeKacid 0-60-20 fertilizer 4 lb.
    PeKacid 0-60-20 fertilizer 4 lb.
    PeKacid 0-60-20 fertilizer 4 lb.
    $22.00
    $0.00 $22.00
    $5.50 lb
  • Haifa GrowClean 5-31-40 polyphosphate fertilizer 55 lb. Haifa GrowClean fertilizer 55 lb. bag-BACK
    Haifa GrowClean 5-31-40 polyphosphate fertilizer 55 lb.
    Sold out
    Haifa GrowClean 5-31-40 polyphosphate fertilizer 55 lb.
    $129.05
    $161.00 $129.05
    Sold out
  • PeKacid 0-60-20 Fertilizer 55 lb. PeKacid 0-60-20 Fertilizer 55 lb. backside
    PeKacid 0-60-20 Fertilizer 55 lb.
    Grower Price
    PeKacid 0-60-20 Fertilizer 55 lb.
    $121.35
    $161.50 $121.35
    Grower Price
  • 5-31-40 POLYPHOSPHATE FERTILIZER 4 lb.
    5-31-40 POLYPHOSPHATE FERTILIZER 4 lb.
    5-31-40 POLYPHOSPHATE FERTILIZER 4 lb.
    $23.90
    $0.00 $23.90
  • Monoammonium Phosphate 12-61-0 fertilizer 1 lb.
    Monoammonium Phosphate 12-61-0 fertilizer 1 lb.
    Monoammonium Phosphate 12-61-0 fertilizer 1 lb.
    $10.92
    $0.00 $10.92
  • Haifa MAP 12-61-0 fertilizer
    Haifa MAP 12-61-0 fertilizer 50 lb. bag
    Grower Price
    Haifa MAP 12-61-0 fertilizer 50 lb. bag
    $62.55
    $104.20 $62.55
    Grower Price
  • 5-31-40 POLYPHOSPHATE FERTILIZER 20 lb.
    5-31-40 POLYPHOSPHATE FERTILIZER 20 lb.
    Sold out
    5-31-40 POLYPHOSPHATE FERTILIZER 20 lb.
    $68.06
    $0.00 $68.06
    Sold out
  • Monoammonium Phosphate fertilizer 40 lb.
    Monoammonium Phosphate fertilizer 40 lb.
    Monoammonium Phosphate fertilizer 40 lb.
    $110.00
    $0.00 $110.00
  • ICL PeaK MKP 40 lb. MKP Mono-Potassium Phosphate 40 lb
    MKP Mono-Potassium Phosphate 40 lb
    Grower Price
    MKP Mono-Potassium Phosphate 40 lb
    $69.92
    $148.67 $69.92
    Grower Price
  • PeKacid 0-60-20 fertilizer 1 lb.
    PeKacid 0-60-20 fertilizer 1 lb.
    PeKacid 0-60-20 fertilizer 1 lb.
    $13.00
    $0.00 $13.00

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