General Hydroponics
GH KoolBloom Liquid
Best bloom booster for gardeners seeking larger, more flavorful harvests.
GH Liquid KoolBloom is a potent liquid concentrate designed to significantly boost flowering and fruiting. Enriched with stress-reducing vitamins and nutrient-transporting acids, it promotes the development of essential oils, intense flavors, and larger, heavier yields. This bloom booster is ideal for initiating robust growth at the start of the reproductive cycle. For optimal ripening in the final two weeks, consider transitioning to Dry KoolBloom. This formula is suitable for a variety of plants, including lawns, vegetables, flowers, trees, shrubs, and houseplants.
$30.49
Owner Satisfaction
4.6
/ 5
Category Rank
1927
/ 4354
#1927 in Fertilizers
Price vs Category Average
-51%
Below average
NPK Ratio
01010
/ --
Who it's for
- Cultivators using diverse hydroponic or soil-based systems
- Gardeners seeking larger, denser flower yields
- Growers prioritizing aromatic quality and resin production
Who should skip it
- Beginners intimidated by frequent pH testing and adjustments
- Budget-conscious growers avoiding specialized, short-term additives
- Novice gardeners prone to over-fertilizing their plants
Performance breakdown
Bloom Stimulation
High phosphorus and potassium levels trigger aggressive reproductive growth cycles.
Ease of Integration
Liquid concentrate formula blends seamlessly into existing nutrient feeding schedules.
Flavor Enhancement
Specialized acids and vitamins actively boost essential oil production for better harvests.
Nutrient Bioavailability
Mineral-based, water-soluble composition ensures rapid uptake by plant root systems.
Stress Resilience
Added vitamins help plants maintain vigor during critical flowering transitions.
Yield Potential
Consistently produces heavier, denser fruits and flowers across diverse plant varieties.
Key Specs
NPK Ratio
0-10-10
Weight
151 lbs
Dimensions
16.000 × 15.500 × 22.000 in
Part Number
HGC732542
Warranty
1 YEAR
Fertilizer Source
Mineral Based
Nitrogen
0%
Phosphorus
10%
Features
- Maximizes reproductive growth and yield
- Contains stress-reducing vitamins
- Enhances essential oils and flavors
- Promotes larger, heavier fruit and flowers
- Easy liquid formulation for feeding schedules
- Supports critical flowering and fruiting stages
What customers say
Customers highly value GH KoolBloom Liquid for its exceptional quality and effectiveness during flowering. Growers consistently observe significantly denser blooms and improved yields, establishing this product as a core nutrient component. Although its concentration demands careful dosing, the dramatic results deliver excellent value. This booster reliably maximizes harvest potential, providing visible, positive improvements to the final outcome.
Know before you buy
You should begin using Liquid KoolBloom at the start of the reproductive cycle to initiate robust flowering and fruiting. It is specifically formulated to support the plant during these critical growth stages.
Yes, this formula is versatile and safe for a wide range of plants, including vegetables, flowers, trees, shrubs, and houseplants. Its mineral-based composition is designed to enhance yields across various species.
Liquid KoolBloom is designed to kickstart the flowering process, while Dry KoolBloom is formulated for the final two weeks of the cycle to assist with optimal ripening. Using both at their respective stages helps maximize your final harvest.
No, Liquid KoolBloom has an NPK ratio of 0-10-10, meaning it contains zero nitrogen. It focuses entirely on providing phosphorus and potassium to support heavy flower and fruit development.
Yes, it is a liquid concentrate that is fully water-soluble, making it easy to mix into your existing nutrient solution and incorporate into your regular feeding schedule.
Still have a question?
Ask Hayley anything about this product before you decide.