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General Hydroponics Liquid Kool Bloom Fertilizers, 1-Quart

  • Based on 2,122 reviews
Condition: New
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Availability: In Stock.
Fulfilled by GROWDOTS

Arrives Tuesday, Sep 30
Order within 11 hours and 55 minutes
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Features

  • Encourages abundant flowering
  • Facilitates ripening in annuals
  • Boosts production of essential oils and fragrances

Description

Liquid Kool Bloom is a is a bulking agent that goes way beyond other bloom boosters. Enriched with stress reducing vitamins and nutrient transporting acids, it promotes heavy production of essential oils, fantastic flavors and increases fruiting and flower development. Liquid Kool Bloom should be used at the start of the reproductive cycle initiating larger, heavier fruits and flowers. During the last two weeks, use dry Kool Bloom for an additional bloom boost and to facilitate ripening. Some sizes may not be stocked in all locations.

Brand: General Hydroponics


Item Weight: 2.65 Pounds


Item Form: Liquid


Liquid Volume: 32 Fluid Ounces


Specific Uses For Product: Plant Growth, Flowering, Fruiting


Brand: General Hydroponics


Item Weight: 2.65 Pounds


Item Form: Liquid


Liquid Volume: 32 Fluid Ounces


Specific Uses For Product: Plant Growth, Flowering, Fruiting


Manufacturer: General Hydroponics


Number of Items: 1


UPC: 793094014526 877707813437


Unit Count: 32.0 Fluid Ounces


Product Dimensions: 3.3 x 3.3 x 9 inches


Item Weight: 2.65 pounds


Department: Unisex-Adult


Item model number: GL56732537


Is Discontinued By Manufacturer: No


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Sep 30

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • takes forever to start blooming
I am glad I bought this when I did. The instructions on GH website call for 2 tsp per five gallons during week 7 of bloom but week 7 can be done over for a longer season. This product turned my growing season around, besides having trouble setting flowers on my peppers when it's 95 out in July, the plants responded well to a lower nitrogen and higher Potassium and Phosphate feeding program. The other products from General Hydroponics are also for sale on Amazon like, floranova and floralicious plus, both I deemed necessary. This really turned around my growing season, before I used orchid blooming fertilizer, like 0-54-32 and got lots of flowers but this stuff worked just as well and makes my plants really hardy. The price is offsetting because I bought the whole blooming season line but hopefully the experts at GH will follow through. I have noticed though that the directions on the bottle aren't accurate if your going to be using other fertilizers with this, like the base nutrients, and need to check on the proper amount to harmonize. I got the drain-to-waste (soil) chart off the general hydroponics website and started at week 7. This stuff doesn't seem strong enough though when the plants need to root or bloom, this kind is low on the scale of fertilizers compared to ordering directly the main ingredient, monopotassium phosphate. Compared, plants fed early after transplants (like in february I fed a chocolate ghost pepper monopotassium phosphate) the plants fed the high numbered fertilizer are doing much better. So the strengths of the last two numbers on this are a little low and like buying enough of this to feed 100 pepper plants is outrageous and using a more cost effective program would be better. This didn't exactly turn around the flowering process like monopotassium phosphate (similar to dry koolbloom) because it's just not strong enough. The stuff wouldn't kick in fast enough when I need to get flowers the process takes a while. The change in mesuring nutrients was difficult too because there is now 8 different bottles (floranova,floranectar..) between fertilizer feedings. ... show more
Reviewed in the United States on August 11, 2016 by dr saggitarious

  • Great product for hydroponics
Really helped plant growth, the bottle came with a nice seal with a double ring making it easy to use with a syringe. I expect the quart bottle to last me a long time making it a great value for the money!
Reviewed in the United States on September 13, 2024 by joe

  • good stuff!
I like to add this near the end of the season! Seems to work as intended...
Reviewed in the United States on September 23, 2024 by QuasarKid

  • Does what it is supposed to do!
Has helped my garden in many ways!
Reviewed in the United States on May 27, 2025 by Melanie Drouhard

  • Kool bloom "WORK'S"
As a major participater in Kool bloom products I highly recommend Kool bloom liquid as well as cool bloom dry. They both are cost profitable!! And using both in tandem make for some of the best flowering and and heavy yields! "Hands down" easy too use and quick performance.
Reviewed in the United States on September 24, 2023 by James e williams

  • I use the whole line
Works good
Reviewed in the United States on December 24, 2024 by angelo r disalvo

  • Does it’s job…
Just started using it and it’s been great .. thick.. dense.. and smells amazing.. will continue to use for sure.. pix tell it all .. u be the judge…
Reviewed in the United States on November 16, 2024 by Myke Myke

  • Works good
Glad I seen it
Reviewed in the United States on December 18, 2024 by Edward moore

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