High-Purity Phosphorus and Potassium for Vigorous Growth and Bloom

Boca Hydro MKP (Monopotassium Phosphate) 0-52-34 is a premium-grade, water-soluble plant food designed to provide a powerful boost of phosphorus (P) and potassium (K) with zero nitrogen. Ideal for hydroponics, fertigation, foliar feeding, and soil application, MKP is a trusted solution for promoting root development, flower and fruit formation, and overall plant vigor.

This chloride-free formulation dissolves quickly and cleanly in water, making it perfect for use in precision feeding systems. It can be applied as a direct soil amendment, a foliar spray, or in concentrated stock solutions for hydroponic and fertigation programs.

Potassium helps plants achieve bigger blooms, stronger flowers, bigger yields and more evenly ripened fruits and buds. In addition to healthier stronger roots, stems, and tubers, it also increases plant vigor making them less susceptible to disease and adverse conditions such as excessive heat or cold. Potassium also improves crop color, texture, taste and size of fruit.

Phosphorus is important not just for roots, but for flowers. Without phosphorous, your flowers and buds will be weak, many will not hold fruit or rot halfway through the fruiting cycle, or will remain smaller then they should be with less actual flowering sites per branch.

Fully water soluble, Chloride Free, Sodium Free and composed of 100% Pure plant macronutrients.

Boca Hydro MKP can be applied in combination with other fertilizers both dry and liquid, as long as they do not contain magnesium or calcium.

Do not apply with heavy metals unless chelated.

Boca Hydro MKP Dosing PDF

1 tsp = 4 grams of MKP
1 tbsp = 13–14 grams of MKP
1/4 cup = 60 grams of MKP

Stock solution (Liquid Concentrate)
Dissolve 500g (1.1 lb) in 1 gallon of water.
1 fl oz = 10g MKP
1 tsp = 5g MKP
1 tbsp = 15g MKP

Foliar: Use for flowering / fruiting boost or spraying soil at time of planting.
For best results spray at dusk or dawn.

Normal Feeding: 2-5 grams per gallon (1/2-1.5 tsp) Safe range for all plants.
0.2–0.3 fl oz (1–1.5 tsp concentrate)

High Demand Feeding: 5-7 grams per gallon (1.25-1.75 tsp) Cool temperature only.
0.5 fl oz (1 tbsp concentrate)

Maximum: 10 grams per gallon (2 tsp per gallon) Full size trees only
0.7–1 fl oz (1.5–2 tbsp concentrate)

Pots and Containers
Typical range: 100–250 ppm

Normal Feeding
2–4 grams per gallon 0.5-01 tsp
(0.2-0.4 fl oz or 1.25-2.5 tsp concentrate)
Delivers approx. 100–200 ppm Phosphorous and 65–135 ppm Potassium

Heavy Feeding (Defeciency Correction)
5–6 grams per gallon (1.25–1.5 tsp)
(0.5-0.6 fl oz or 1-1.25 tbsp concentrate)
Delivers approx. 260 ppm Phosphorous and ~170 ppm Potassium

Drench (5 gallons of water)

Feeding Strength	Dry MKP	Stock Solution
Light Feed	10 g	1 fl oz (2 tbsp)
Moderate Feed	20–30 g	2–3 fl oz (4–6 tbsp)
Heavy Feed	40–60 g	4–6 fl oz (8–12 tbsp)
Max Strength	75–80 g	~6.5 fl oz (1/3 cup)

Direct Soil Application
Can be applied to soil at a rate of 1-2 lb per 1000 Square feet

Hydroponics:

Boca Hydro MKP is chloride-free and pH-neutral
Always add MKP after calcium nitrate to avoid precipitation

MKP alone at 2 g/gal ≈ 0.5–0.6 EC
Monitor P and K buildup in long-term recirculating systems

Growth Stage	Dry MKP	Liquid Concentrate per Gallon
Seedlings / Early Veg Provides ~25–50 ppm Safe for young roots	0.5–1 g 1/8-1/4 tsp	0.05–0.1 fl oz (1/4-1/2 tsp)
Vegetative Stage Enhances root growth and early structure	2 g 1/4-1/2 tsp	0.2 fl oz (1 1/4 tsp)
Bloom Stage Full strength flowering	3–4 g 1/2-1 tsp	0.3–0.4 fl oz (2–2 1/2 tsp)
Max Bloom Boost Only with high-demand crops and EC monitoring	5 g 1 1/4 tsp	0.5 fl oz (1 tbsp)

Plant foods like MKP report nutrients in oxide form by convention, but plant scientists and calculators often work in elemental form, which is the actual amount of pure phosphorus (P) and pure potassium (K).

MKP Rate (g/gal)	Elemental P (ppm)	Elemental K (ppm)	P₂O₅ (ppm)	K₂O (ppm)
0.5 g/gal	~30 ppm	~42 ppm	~104 ppm	~68 ppm
1 g/gal	~60 ppm	~84 ppm	~208 ppm	~136 ppm
2 g/gal	~120 ppm	~168 ppm	~416 ppm	~272 ppm
3 g/gal	~180 ppm	~252 ppm	~624 ppm	~408 ppm
4 g/gal	~240 ppm	~336 ppm	~832 ppm	~544 ppm
5 g/gal	~300 ppm	~420 ppm	~1040 ppm	~680 ppm

Fertigation
Target: 2g per gallon
Dissolve 2.2 lbs(1000g) or 1kg in 5 gallons of water.
Target: 4g per gallon
Dissolve 4.4 lbs (2000g) or 2kg in 5 gallons of water.
Inject at 1:100

Guaranteed Analysis CAS NO 7778-77-0
Phosphorus (as P2O5)................52%
Phosphorus (as P).....................22.7%
Potassium (as K2 O).................34.5%
Potassium (as K)........................28.7%

Boca Hydro MKP Mono-Potassium Phosphate 0-52-34 Water Soluble Flowering Enhancer Bloom Booster and Root Builder for all Plants, Vegetables and Trees