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
  • Monoammonium Phosphate 12-61-0 fertilizer 20 lb.
    Monoammonium Phosphate 12-61-0 fertilizer 20 lb.
    Monoammonium Phosphate 12-61-0 fertilizer 20 lb.
    $75.13
    $0.00 $75.13
  • MagPhos 0-55-18 fertilizer 4 lb.
    MagPhos 0-55-18 fertilizer 4 lb.
    MagPhos 0-55-18 fertilizer 4 lb.
    $22.75
    $0.00 $22.75
  • PeKacid 0-60-20 fertilizer 20 lb.
    PeKacid 0-60-20 fertilizer 20 lb.
    PeKacid 0-60-20 fertilizer 20 lb.
    $66.20
    $0.00 $66.20
  • DKP 0-41-54 fertilizer 20 lb. DKP 0-41-54 fertilizer 20 lb.
    DKP 0-41-54 fertilizer 20 lb.
    DKP 0-41-54 fertilizer 20 lb.
    $89.64
    $0.00 $89.64
  • 5-31-40 POLYPHOSPHATE FERTILIZER 1 lb.
    5-31-40 POLYPHOSPHATE FERTILIZER 1 lb.
    Sold out
    5-31-40 POLYPHOSPHATE FERTILIZER 1 lb.
    $13.92
    $0.00 $13.92
    Sold out
  • DKP 0-41-54 fertilizer 4 lb. DKP 0-41-54 fertilizer 4 lb.
    DKP 0-41-54 fertilizer 4 lb.
    DKP 0-41-54 fertilizer 4 lb.
    $29.60
    $0.00 $29.60
  • Haifa DKP 0-41-54 water soluble fertiizer Haifa DKP 0-41-54 fertilizer 50 lb.
    Haifa DKP 0-40-53 fertilizer 50 lb.
    Grower Price
    Haifa DKP 0-40-53 fertilizer 50 lb.
    $179.55
    $224.10 $179.55
    Grower Price
  • DKP 0-41-54 fertilizer 1 lb. DKP 0-41-54 fertilizer 1 lb.
    DKP 0-41-54 fertilizer 1 lb.
    DKP 0-41-54 fertilizer 1 lb.
    $15.08
    $0.00 $15.08
  • MagPhos 0-55-18 fertilizer 1 lb.
    MagPhos 0-55-18 fertilizer 1 lb.
    MagPhos 0-55-18 fertilizer 1 lb.
    $13.50
    $0.00 $13.50

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