• General Hydroponics Kool Bloom - 1 Quart
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Product benefits

  • Bloom Support
  • Bulkier Blooms
  • Final Ripening
  • Fuller Flowers
  • Aroma Boost
  • Extra PK Support
  • Multi-System Use
  • Multi-Media Ready

This product may offer additional benefits beyond those listed.

Frequently purchased together

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General Hydroponics Kool Bloom - 1 Quart

Flowering Stage Indoor Outdoor Regular Watering Watering Systems Hydroponics Coco Coir Safe Soil Soilless
$44.99
$44.99
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OTHER AVAILABLE SIZES / MODELS:

1 Gallon 1 Quart 2.2 LB
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Product benefits

  • Bloom Support
  • Bulkier Blooms
  • Final Ripening
  • Fuller Flowers
  • Aroma Boost
  • Extra PK Support
  • Multi-System Use
  • Multi-Media Ready

This product may offer additional benefits beyond those listed.

Description
General Hydroponics Liquid KoolBloom is a concentrated nutrient additive and bulking formula for intense flowering, bulking and ripening support in annual plants. It also works as a focused plant nutrient supplement when you want bloom-stage performance without changing your base nutrition approach.

Liquid KoolBloom is designed for the flowering and ripening stage, with a phosphorus and potassium emphasis that supports the demands of reproductive growth. For gardens chasing stronger finish quality, it is positioned to enhance the production of essential oils and fragrance in many flowers, culinary herbs, and medicinal herbs. Those aroma- and finish-focused benefits pair naturally with its role as a bulking formula, supporting fuller development as plants move through later bloom.

Because it’s a concentrated formula, Liquid KoolBloom is built for efficiency and simplicity in real-world setups. Small amounts deliver big phosphorus and potassium benefits, making it a practical choice for growers who prefer a targeted bloom supplement rather than a heavy-handed base fertilizer change. Its NPK is 0-10-10, keeping the profile firmly centered on flowering performance and ripening support.

Liquid KoolBloom is ideal for hydroponics, soil, and coco coir, helping you keep one bloom-focused tool across multiple garden styles. It is also listed for common media, including rockwool, potting mix, peat lite mix, in-ground soil, and water culture. That broad media fit makes it easier to stay consistent when you run mixed gardens or switch between container and hydroponic environments.

For a compact facts layer, the formula is derived from magnesium phosphate, potassium phosphate, and potassium sulphate, aligning with its phosphorus and potassium focus for flowering plants. This is a good fit for growers who want a concentrated nutrient additive that supports intense flowering and late-stage bulking and ripening, especially in hydroponics, soil, and coco coir gardens where aroma and finish quality matter.

Product benefits: Flowering Stage; Indoor; Outdoor; Regular Watering; Watering Systems; Hydroponics; Coco Coir Safe; Soil; Soilless; Bloom Support; Bulkier Blooms; Final Ripening; Fuller Flowers; Aroma Boost; Extra PK Support; Multi-System Use; Multi-Media Ready.

Guaranteed analysis: Available Phosphate (P2O5): 10.0%; Soluble Potash (K2O): 10.0%.

Derived from: Magnesium Phosphate; Potassium Phosphate; Potassium Sulphate.

Guaranteed Minimum Analysis
Available Phosphate (P2O5) 10.0%
Soluble Potash (K2O) 10.0%

Derived From
Magnesium Phosphate
Potassium Phosphate
Potassium Sulphate

Frequently Asked Questions
What does available phosphate (P₂O₅) do for plant growth?

Available Phosphate (P₂O₅) supports root development, energy transfer, and early structural growth by providing a form of phosphorus that plants can absorb and use quickly.

Read the full guide

Why is soluble potash (K2O) important for plants?

Soluble potash (K2O) is important because it helps plants control water use, move sugars to new growth and fruit, and build stronger, higher-quality structure under stress. It’s unique from many other nutrients because it acts more like a regulator and transport helper than a direct “building material,” so the biggest benefits show up as steadier growth, stronger stems, and better finishing instead of just bigger leaves.

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What does magnesium phosphate do for plants?

Magnesium phosphate supports chlorophyll-driven energy capture and phosphorus-driven energy movement, helping plants keep steady growth and stronger roots without the sharp swings of faster sources; it’s unique because it supplies both magnesium and phosphorus together in a typically slower-to-available form, so balance and root-zone access matter as much as the amount.

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What does potassium phosphate do for plants?

Potassium phosphate supplies both potassium and phosphorus, supporting root energy, nutrient transport, and flowering readiness when plants are actually limited by those nutrients. It’s unique because it delivers two major nutrients in a fast-available form, so it can correct a real PK bottleneck quickly, but it also requires careful use to avoid salt stress and nutrient imbalance.

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Is potassium sulfate better than other potassium sources for sensitive plants?

Potassium sulfate is often preferred because it supplies potassium without added chloride and also provides sulfur, which supports protein-building and efficient nutrient use, making it a cleaner, balanced option when plants are sensitive to chloride or when you want potassium without pushing extra nitrogen or phosphorus.

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Safety & Technical Documents

Frequently purchased together

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Nutrient Feed Chart

Vegetative — Kool Bloom

Flowering — Kool Bloom

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