General Hydroponics Liquid KoolBloom 0-10-10 is a phosphorus and potassium-rich bloom booster formulated to support fruit and flower development from the start of the reproductive cycle through final bulk. Enriched with stress-reducing vitamins and nutrient-transporting acids, this 6-gallon container is sized for commercial and large-scale cultivation where consistent, high-volume bloom supplementation is required.
Liquid KoolBloom Specifications
Key specifications for General Hydroponics Liquid KoolBloom 0-10-10 in the 6-gallon size. Weight and NPK figures are sourced from the canonical product data.
| Specification | Value |
|---|---|
| NPK Analysis | 0-10-10 |
| Container Size | 6 Gallon |
| Shipping Weight | 75 lb (approx.) |
| Nutrient Type | Liquid Bloom Booster |
| Brand | General Hydroponics |
| Primary Nutrients | Phosphorus (P) & Potassium (K) |
| Formulation Phase | Reproductive cycle (early-to-mid bloom) |
Why Choose Liquid KoolBloom
Liquid KoolBloom is formulated as a bulking agent rather than a standalone base nutrient. That distinction matters for growers who want to push fruit and flower size without restructuring their existing feed program. Here is what the product brings to a bloom program:
- High P-K ratio at 0-10-10: With zero nitrogen, Liquid KoolBloom adds phosphorus and potassium without encouraging vegetative growth during the flowering window, which is where nitrogen is unwanted.
- Stress-reducing vitamins included: The formulation includes vitamins designed to reduce plant stress during the demanding reproductive phase, helping the plant allocate energy toward fruit and flower production rather than recovery.
- Nutrient-transporting acids: Organic acids in the blend support nutrient uptake and translocation, which can improve how efficiently the plant uses both the KoolBloom supplement and the base nutrients already in the reservoir.
- Promotes essential oil production: According to the manufacturer, Liquid KoolBloom supports heavy production of essential oils and improved flavor development in the finished crop.
- 6-gallon format for scale: The large container format reduces the frequency of reordering for operations running multiple reservoirs or large-volume systems, and the per-gallon cost is lower than smaller sizes.
For growers already using a General Hydroponics base program such as the Flora Series or FloraNova, Liquid KoolBloom integrates directly without requiring a separate feeding chart — the product is designed around the GH dosing framework.
Best Uses for Liquid KoolBloom
Liquid KoolBloom is positioned for use at the start of the reproductive cycle through the mid-bloom phase. The manufacturer recommends transitioning to Dry KoolBloom during the final two weeks to facilitate ripening — so the liquid and dry formulations are intended to be used in sequence, not interchangeably.
- Early-to-mid bloom supplementation: Begin adding Liquid KoolBloom when flowering is initiated and continue through the bulk phase to maximize fruit and flower development before the ripening stage.
- Hydroponic reservoirs: The liquid format mixes readily into recirculating systems, NFT channels, DWC buckets, and drain-to-waste setups where precise dosing is straightforward.
- Coco coir and soilless media: Suitable for coco coir grows where a separate high-P/K supplement is part of the bloom feed schedule alongside a low-nitrogen base.
- Commercial and large-scale operations: The 6-gallon container (approximately 75 lb) is practical for facilities mixing large weekly reservoir volumes where smaller bottles would require frequent restocking. If you are also supplementing with a root inoculant such as Advanced Nutrients Tarantula, Liquid KoolBloom fits within the same feed-program structure.
- Crops sensitive to flavor and aroma: The essential-oil and flavor benefits cited by General Hydroponics make this product relevant for herb, flower, and fruit crops where end-product quality metrics matter.
Liquid KoolBloom is not a base nutrient and does not supply nitrogen. It should be used alongside a complete base nutrient program. Growers supplementing with other inputs — for example, a high-carbon microbial activator like Earth Juice Hi-Brix Molasses — should account for all additive EC contributions when dialing in reservoir targets.
Sources & Further Reading
General Hydroponics is a brand under the Hawthorne Gardening Company. Product specifications and application guidelines are maintained on the Hawthorne Gardening Company’s brand resource site.
























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