






🌿 Bloom Boldly, Grow Confidently — Your Garden’s Secret Weapon!
General Hydroponics KoolBloom is a 946ml liquid fertilizer designed to enhance blooming by delivering essential phosphorus and potassium, along with vitamins that alleviate plant stress. Ideal for hydroponic and soil cultures, it dissolves quickly for efficient nutrient absorption and pairs perfectly with GH Flora series products to maximize flowering and fruit quality. Highly rated by users, it’s a go-to solution for professional and hobbyist growers aiming for vibrant, fragrant, and abundant harvests.

| ASIN | B002DV8TBQ |
| Amazon Bestseller | #42,105 in DIY, Tools & Garden ( See Top 100 in DIY, Tools & Garden ) #126 in Liquid Fertilizers & Plant Vitalizers |
| Batteries Included | No |
| Batteries Required | No |
| Brand Name | General Hydroponics |
| Customer Reviews | 4.7 4.7 out of 5 stars (2,089) |
| Date First Available | August 8, 2012 |
| Item Weight | 1.2 kg |
| Manufacturer | General Hydroponics |
| Model Number | GL56732537 |
| Number of Tatami Mats | For home gardening |
| Package Dimensions | 21.8 x 8.4 x 8.2 cm |
| Package Weight | 1.24 Kilograms |
| Volume | 32 Fluid Ounces |
D**S
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.
R**T
It’s the first time using this product for cannabis but have heard it gives good results.
B**C
As advertised thank you!
I**Z
Exactly what I was expecting
M**N
makes flowers grow to double there size
Trustpilot
1 month ago
1 week ago