Plagron PK 13-14 Liquid Fertilizer | Premium Bud & Bloom Booster

Plagron PK 13-14 is a professional-grade, highly concentrated mineral bloom booster designed to supercharge the reproductive phase of plants. Formulated with a precise ratio of 13% water-soluble phosphorus (\(P_{2}O_{5}\)) and 14% water-soluble potassium (\(K_{2}O\)), this liquid supplement provides immediately bioavailable macronutrients at the exact physiological window when plants demand them most.

Phosphorus plays a crucial role in cellular energy transfer (\(ATP\)) and stimulates early flower cluster formation. Concurrently, potassium regulates osmotic water pressure and enzyme activation, which forces the developing flower structures to pack on maximum physical weight, firmness, and overall density. Because it is a highly purified mineral formula, it dissolves 100% sediment-free and will not clog irrigation emitters or automated lines.

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Technical Specifications

Parameter	Specification
Product Classification	Mineral-based phosphorus & potassium bloom booster
Physical Form	Low-viscosity liquid concentrate
Guaranteed NPK Value	NPK: 0 - 13 - 14 (Zero Nitrogen content)
Composition Breakdown	13% Phosphorus Pentoxide (\(P_{2}O_{5}\)) | 14% Potassium Oxide (\(K_{2}O\))
Solubility Profile	100% water-soluble; zero particulate sedimentation
Substrate Compatibility	Soil, Peat Mixes, Coco Coir, Rockwool, and Hydroponics
System Compatibility	Gravity feeds, DWC, NFT, and automated drip networks
Target Results	Increased flower site production, structural density, and harvest weight

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Metric Dilution Rates & Feeding Timeline

Plagron PK 13-14 features a maximum application rate of 2 mL per 1 Litre of water (a 1:500 mixing ratio). It is highly concentrated, meaning tracking solution Electrical Conductivity (EC) is essential to avoid nutrient burn.

Important Compatibility Rule: Never use Plagron PK 13-14 simultaneously with Plagron Green Sensation. Green Sensation already includes a potent, built-in PK booster; layering both will lead to immediate element lockouts and severe root scorch.

Phase of Flower Cycle	Suggested Growth Stage	Dosage per 1L Water	Mixing Context & Objective
Early Flowering	Weeks 1 to 3 of Flower	0.0 mL / L	Do not use. Plants require nitrogen/base ratios.
Peak Bloom Window	Week 4 of Flower onwards	2.0 mL / L (Max)	Add to tank before base feed to build a PK foundation.
Late Bloom Swell	Final 1–2 Weeks before flush	2.0 mL / L (Max)	Drives final cell density and fruit compacting.
Flushing Stage	Final 7 to 14 Days	0.0 mL / L	Stop all additives; flush with pure water.

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Best Use Practices & Application Steps

1. The "PK-First" Tank Mixing Sequence

1. Fill your mixing reservoir with fresh water at an ambient temperature 
2. Shake the Plagron PK 13-14 bottle vigorously to ensure the concentrated minerals are uniform.
3. Measure and add Plagron PK 13-14 to the fresh water first at a rate up to 2 mL/L. Stir for 1 minute.
4. Gradually add your primary base flowering nutrients (such as Plagron Hydro A&B, Cocos A&B, or Terra Bloom) until your EC meter reaches your specific targets.
5. Mix in non-mineral quality boosters if applicable (e.g., Plagron Sugar Royal works ideally with PK 13-14 to boost terpene output without altering mineral thresholds).
6. Use a calibrated digital meter to check the final pH. Pure mineral PK formulas cause pH shifts; always adjust back to 5.5–5.8 for hydro/coco or 6.0–6.5 for soil.

2. Run-to-Waste and Hydroponic Safety

Because mineral PK additives are highly absorbable, they leave zero sticky residues. This makes the solution completely stable in stagnant reservoirs and eliminates the risk of biofilm accumulation or physical line blockages inside micro-bore drip lines and thin capillary pins.

3. Managing Wet-to-Dry Cycles in Soil

When using PK 13-14 in soil systems, ensure you clear the pots with a 10% to 20% runoff volume at every watering event. Concentrated phosphorus and potassium salts can accumulate in peat or loam over time, making a slight runoff necessary to wash away old mineral remnants and keep the root zone fresh.