Soluble N-P-K Mixes

Soluble N-P-K Fertilizer Mixes for Hydroponics, Greenhouse & Fertigation

Water-soluble N-P-K fertilizer mixes are the foundation of professional hydroponic and greenhouse nutrient programs. Pre-formulated with precise ratios of nitrogen, phosphorus, and potassium — plus secondary nutrients and micronutrients — these complete fertilizers are designed for continuous liquid feed programs, drip fertigation, and recirculating hydroponic systems.

Custom Hydro stocks the most trusted soluble N-P-K brands in commercial horticulture, each with crop-specific formulations optimized for different growth stages, crop types, and water quality profiles.

Brands & Formulations

• Peters Professional — industry-standard soluble fertilizers for greenhouse and nursery production; multiple crop-specific formulations including 5-11-26 Hydroponic Special and Canna+ Program
• MasterBlend — professional 3-part hydroponic fertilizer system with crop-specific formulas including 4-18-38 Tomato Formula, Lettuce Formula, and Strawberry Formula; the most widely used base fertilizer system in hobby and commercial hydroponics
• JR Croptech — precision-formulated soluble fertilizers developed specifically for commercial cannabis production in hydroponic and soilless systems
• Pinnacle — professional-grade soluble fertilizer program for high-value greenhouse and hydroponic crops
• FloraPro — professional-grade soluble fertilizers designed for high-performance hydroponic and soilless production systems

Why Soluble N-P-K Mixes

• Complete nutrition in one product — N, P, K plus secondary nutrients and micronutrients in a single, pre-balanced formulation
• Crop-specific ratios — formulations optimized for vegetables, leafy greens, strawberries, ornamentals, cannabis, and fruiting crops at different growth stages
• 100% water soluble — dissolves completely with no residue; compatible with all drip, NFT, DWC, and injection systems
• Consistent results — professionally mixed to tight specifications for predictable, repeatable crop performance
• Continuous liquid feed ready — designed for constant feed programs at low concentrations or weekly high-concentration applications

Choosing the Right Mix

• Hydroponic tomatoes, peppers, cucumbers — MasterBlend 4-18-38 Tomato Formula + calcium nitrate + magnesium sulfate (3-part system)
• Leafy greens & lettuce — MasterBlend Lettuce Formula or Peters 5-11-26 Hydroponic Special
• Strawberries — MasterBlend Strawberry Formula; optimized N-P-K ratios for fruit set, flavor, and yield
• Cannabis (vegetative & bloom) — JR Croptech cannabis-specific formulas or Peters Professional Canna+ Program
• Greenhouse vegetables & ornamentals — Peters Professional crop-specific programs or Pinnacle
• High-performance soilless systems — FloraPro professional-grade formulations