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General Hydroponics

General Hydroponics Liquid Kool Bloom Fertilizers, 1-Quart

  • Based on 2,186 reviews
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Availability: In Stock.
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Arrives Sunday, Oct 18
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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: 2.7 pounds


Item Form: Liquid


Liquid Volume: 32 fluid ounces


Specific Uses For Product: Hydroponics


Brand Name: General Hydroponics


Model Number: GL56732537


Number of Packs: 1


Manufacturer: General Hydroponics


Number of Items: 1


UPC: 793094014526 877707813437


Unit Count: 32 Fluid Ounces


Included Components: General Hydroponics Liquid Kool Bloom Fertilizers, 1-Quart


Item Type Name: General Hydroponics Liquid Kool Bloom Fertilizers, 1-Quart


Part Number: GH1452


Warranty Description: Warranty


Item Form: Liquid


Specific Uses For Product: Hydroponics


Coverage: Medium


Target Species: plants


Item Weight: 2.7 pounds


Liquid Volume: 32 fluid ounces


Mixing Ratio: 1128


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Oct 18

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

    • This does the trick
General Hydroponics is your one stop for nutrients. I have been using it for two years with zero issues, growing in Coco cior. I have a DWC set up that I am going to try it in next. Happy growing Growmies.
Reviewed in the United States on May 16, 2026 by Will I Am
    • 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
    • Do your research
This is a two part system
Reviewed in the United States on May 28, 2026 by Derek Mcdonald
    • 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
    • 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
    • Will buy again
Works as it should
Reviewed in the United States on May 22, 2026 by John Scarbrough
    • The added boost that plants often need during bloom.
I use this in conjunction with the other 3 part GH line with excellent results. Gorgeous flowers that need nothing. This fertilizer adds that little bit of P/K that is often needed when a plant is in full bloom and really feeding hard. A little goes a long way. Love it, and at this price delivered to my door its hard not to! ... show more
Reviewed in the United States on February 6, 2023 by Guru of Gear
    • Love general hydro
My tomatoes love this stuff !! Their website has all sorts of info on growing. Great company great products this will be my forever nute solution! I only have pictures of my tomatoes but I used this on peppers strawberries blueberries and more! I would definitely recommend their entire line up. Once I added the rest of their nutrients in the line up the tomatoes ending up going crazy. I actually cut them down because they were getting to big 7’ tall was a little much! ... show more
Reviewed in the United States on September 30, 2022 by Dustin

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