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General Hydroponics Dry KoolBloom, 4 oz.

Item #: GH1315

General Hydroponics
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KoolBloom 4 oz

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KoolBloom is a highly concentrated nutrient supplement that promotes abundant flowering and facilitates ripening in annual flowers and herbs!

KoolBloom is rich with phosphorus and potassium and contains precise amounts of ripening elements. KoolBloom is to be used only at the very end of a plant's life cycle and will help build larger, heavier fruits and flowers.

Dry KoolBloom is packed with the potency your plants prefer in the final stages of flowering for raging weight gain and ripening to perfection. The ingredients that make Dry KoolBloom unique will make your fruits swell, while exponentially increasing the production of essential oils and floral fragrance.

  • Encourages abundant flowering.
  • Facilitates ripening in annuals.
  • Boosts production of essential oils and fragrances.
  • Increases size and weight of fruits and flowers.
  • Precisely formulated to boost potency and enhance the performance of all types of nutrients.


Brand General Hydroponics
SKU GH1315
Weight (lb.) 1
Height (in.) 4.4
Width (in.) 1.7
Length (in.) 1.6
Free Shipping No
N-P-K 2 - 45 -28
Nutrient Application Hydroponic and Soil Nutrient
Nutrient Type Synthetic Based
OMRI Certified No
Nutrient Material Type Powder

General Hydroponics Dry KoolBloom, 4 oz. Questions & Answers

Can you use more than the recommended dose of KoolBloom at any time during the flowering or fruiting cycle?

No, using too much KoolBloom will actually cause all blooms and possibly the plant to deteriorate and die. KoolBloom works on the premise that the plant is shocked into mass flowering. Shocking the plant too much will cause rotting and in extreme cases death.

When is KoolBloom best used? How much?

KoolBloom can safely be used three to four weeks before the end of the plants life cycle. Use only the recommended dose of 1/4 tsp per gallon (1.5 g / gallon). This will increase the ppm by approximately 200 ppm (0.4 mS).

What nutrient strength should I use KoolBloom with?

Use a less aggressive nutrient strength in the range of 1000-1200 ppm (2-2.4 mS) before adding the KoolBloom.

Customer Reviews

First time user Review by Kushman
This is the first time using this product. I asked a local retailer for something to give my plants that extra boost at the end , this is what he recommend.
After the first use it took about 1 week to see results, I was very impressed!!! I would estimate at least an extra 3 inches of growth ( flowers) and the plants are doing great, they look like what is seen only in pictures.
I am glad that I purchased this product!!!

(Posted on August 13, 2016)
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badazz product Review by freaknsd
THIS stuff is awesome... I grew two plants and used one with kool blooom and one without and I produced an extra 1/2 oz. of product with using kool bloom. I would recommend it to anyone....

(Posted on September 10, 2015)
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