General Hydroponics KoolBloom Powder (2-45-28)

KoolBloom Powder for Late-Flowering and Ripening Support

General Hydroponics KoolBloom Powder is a concentrated, water-soluble 2-45-28 nutrient supplement for the final stages of flowering. Also known as Dry KoolBloom, it supplies phosphorus and potassium to support flower development and ripening in soil gardens and hydroponic systems.

Designed for use alongside a regular feeding program, this dry formula provides nutrients that support essential oil and fragrance production in many flowers and culinary herbs.

Key Features

• Late-stage nutrition: Formulated for the finishing stage of flowering.
• Concentrated powder: A small amount supplies substantial phosphorus and potassium.
• Soil and hydroponic use: Mix into irrigation water or a nutrient reservoir according to label directions.

Directions for Use

The manufacturer’s label lists a rate of ¼ teaspoon per gallon, with a metric rate of 1.25 grams per 4 liters of water. For soil, add to irrigation water as part of your feeding program. For hydroponics, add to the reservoir with your usual plant food.

Use only during the final stages of flowering. Follow your package label and the applicable General Hydroponics feed chart for timing, nutrient combinations, and when to discontinue before harvest. Measure carefully: this formula is highly concentrated, and overapplication can harm plants.

Guaranteed Analysis

• Total Nitrogen (N): 2.0%
• Available Phosphate (P2O5): 45.0%
• Soluble Potash (K2O): 28.0%
• Magnesium (Mg): 1.0%
• Sulfur (S): 1.5%