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  9. Power Si 16.91 oz.(500ml) PK Synergy Liquid Plant Fertilizer Bloom Phase Microbial Inoculant, 1 pk.

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Power Si 16.91 oz.(500ml) PK Synergy Liquid Plant Fertilizer Bloom Phase Microbial Inoculant, 1 pk.

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Power Si 16.91 oz.(500ml) PK Synergy Liquid Plant Fertilizer Bloom Phase Microbial Inoculant, 1 pk.

Item # 604263099

Power Si Power Si 16.91 oz.(500ml) PK Synergy Liquid Plant Fertilizer Bloom Phase Microbial Inoculant, 1 pk.
Power Si Power Si 16.91 oz.(500ml) PK Synergy Liquid Plant Fertilizer Bloom Phase Microbial Inoculant, 1 pk.
$59.99

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Power Si 16.91 oz.(500ml) PK Synergy Liquid Plant Fertilizer Bloom Phase Microbial Inoculant, 1 pk.

Item # 604263099

Power Si Power Si 16.91 oz.(500ml) PK Synergy Liquid Plant Fertilizer Bloom Phase Microbial Inoculant, 1 pk.
Power Si Power Si 16.91 oz.(500ml) PK Synergy Liquid Plant Fertilizer Bloom Phase Microbial Inoculant, 1 pk.

$59.99
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PowerSi PK Synergy 500ml is a bloom-phase nutrient enhancer that uses a powerful microbial consortium to increase the bioavailability of phosphorus (P) and potassium (K)two key nutrients for flower development, energy transfer, and resin production. This proprietary blend of beneficial bacteria, including Bacillus megaterium, Frateuria aurantia, Pseudomonas putida, and Bacillus mucilaginosus, works by solubilizing locked-up P and K in the soil or medium. The result is a stronger root zone, better nutrient uptake, and visibly improved flowering performance. PowerSi PK Synergy helps plants produce denser buds, develop more trichomes, and strengthen their ability to handle environmental stress. It's easy to use, leaves no residue, and is compatible with any nutrient linemaking it an ideal tool for serious growers looking to maximize their bloom phase results.

Looking for more information on fertilizer? Check out our guide on how to read fertilizer numbers in the product documents section.

  • Enhances Phosphorus & Potassium Uptake Advanced microbial blend unlocks bound P & K in the root zone, improving nutrient absorption during the bloom phase.
  • Supports Flower & Resin Development Promotes denser buds, stronger plants, and increased trichome and resin production for high-quality harvests.
  • Microbial Consortium for Plant Health Contains Bacillus megaterium, Pseudomonas putida, Bacillus mucilaginosus, and Frateuria aurantia to stimulate growth and resilience.
  • Improves Root Strength & Yield Potential Encourages healthier root systems and greater nutrient efficiency, leading to bigger yields and better flower formation.
  • Versatile & Compatible Works in soil, coco, and hydroponics. Easily integrates into any bloom-phase feeding program without disrupting existing nutrients.
BrandPower Si
Country of OriginMade in USA
Application MethodPour
Compatible Grass TypesAll Purpose
Compatible SeasonsAll-season
Concentrated or Ready to UseConcentrated
Contact Or SystemicN/A
Coverage Area5,000 sq ft
EmergenceN/A
Fertilizer Coverage Area Range5000 - 5999 sq ft
Fertilizer FeaturesN/A
Fertilizer Longevity10 days
Fertilizer NPK RatioN/A
Fertilizer Pack Size RangeLess than 15lb
FormLiquid
OrganicNo
Package Quantity1
Package Size16.91 oz.
Product Height8 in.
Product Length2.5 in.
Product Weight1.16 in.
Product Width2.5 in.
WarningsYes
Manufacturer Part Number34038
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