Soul LBS – 9 lb

Soul LBS is a soluble flower booster from Aurora Innovations with an NPK of 0.5 – 40 – 30. It pairs easy-dissolving phosphorus and potassium with a proprietary blend of key micronutrients, beneficial biology, and a sucrose sugar booster to support flower production and yield in soil and soilless gardens. This 9 lb pack is sized for serious growers running a full bloom cycle alongside a balanced base fertilizer program.

Soul LBS Specifications

Soul LBS is a dry, water-soluble bloom booster formulated to deliver concentrated phosphorus and potassium during the flowering stage. The table below summarizes the published specifications for the 9 lb pack.

Specification	Value
Product type	Soluble flower / bloom booster
Brand	Aurora Innovations
NPK	0.5 – 40 – 30
Pack size	9 lb
Net weight	9.11 lb
Form	Dry, water-soluble
Derived from	Potassium Nitrate, Monopotassium Phosphate, Potassium Sulfate, Copper Sulfate, Zinc Sulfate, Bacillus Subtilis, Sucrose
Application	Soil and soilless (root zone)

Why Choose Soul LBS

Soul LBS is built around a single job: pushing phosphorus and potassium into the root zone during flowering, when demand for those two elements peaks. The 0.5 – 40 – 30 ratio keeps nitrogen low while supplying the heavy P and K that developing flowers draw on, so it complements a base feed rather than competing with it.

What sets the formula apart is that it does more than deliver minerals. Aurora Innovations combines the easy-dissolving phosphorus and potassium with a proprietary blend of key micronutrients, plus beneficial biology and a sucrose sugar booster that supports those organisms in the root zone. That reflects the brand’s broader approach of supplementing biology with versatile organisms and feeding them to keep the rhizosphere active.

• Targeted 0.5 – 40 – 30 NPK aimed squarely at the bloom phase.
• Soluble phosphorus and potassium that dissolve quickly for fast availability.
• A proprietary blend of key micronutrients, including copper and zinc sources.
• Bacillus subtilis biology paired with a sucrose carbohydrate booster to support root-zone life.
• Works in both soil and soilless media as a supplement to a balanced base program.

Best Uses for Soul LBS

Soul LBS is a bloom-stage additive, not a standalone fertilizer. It is designed to ride alongside a complete base nutrient program and concentrate phosphorus and potassium where and when flowering plants need them most.

• Flowering and fruiting support: add during the bloom phase to supply the heavy phosphorus and potassium that flower and yield development draws down.
• Soil gardens: use as a root-zone booster in potting soil or amended beds running a balanced primary fertilizer.
• Soilless and coco systems: dissolve into the feed for soilless mixes where you control the full nutrient profile.
• Programs built on a base line: Aurora Innovations recommends pairing Soul LBS with a balanced primary fertilizer such as the Soul nutrient line so the booster supplements rather than replaces core feeding.

If you are assembling a wider additive shelf, Soul LBS sits comfortably next to root and microbe products like a beneficial bacteria inoculant such as Tarantula and carbohydrate-style boosters; growers who like the sucrose angle here often also keep a molasses-based carbohydrate source on hand for the root zone.

Soul LBS vs Other Bloom Boosters

Most bloom boosters fall into one of two camps: pure mineral P-K supplements, or biological and carbohydrate additives that feed the root zone. Soul LBS deliberately straddles both. The 0.5 – 40 – 30 analysis puts it firmly in the high-P, high-K mineral booster category, but the addition of Bacillus subtilis and a sucrose sugar booster means it also carries the biology-and-carbohydrate function that many growers buy separately.

Compared with a single-purpose mineral PK additive, Soul LBS supplies micronutrients (copper and zinc sources) alongside the macro P and K, so it covers more of the bloom-stage nutrient picture in one bag. Compared with a purely biological inoculant, it brings the soluble phosphorus and potassium that an inoculant alone cannot provide. Because it is a supplement, it is meant to be used with a balanced base feed rather than as a complete one-part nutrient. Growers comparing dry, multi-pound bloom products may also look at bulk options like larger-format root-zone formulas when scaling a program up.

Compatibility

Soul LBS is formulated for both soil and soilless applications, which makes it flexible across common media: potting soil, amended beds, coco, and other soilless mixes. It is intended to be layered onto a balanced primary fertilizer program, and Aurora Innovations specifically points growers to its own Soul nutrient line as the base feed that Soul LBS supplements.

Because it is a water-soluble dry product, it integrates into standard reservoir or watering-can feeding without special equipment. As with any concentrated P-K and micronutrient booster, it should be dissolved fully and used as part of a managed feed rather than added on top of an already complete bloom fertilizer without adjusting the rest of the program. Manufacturer-published EC and pH operating ranges are not listed in the product data; consult Aurora Innovations documentation for the values that match your base program.

Dosing Guidelines

Soul LBS is a flowering-stage booster, so dosing is tied to the bloom phase of your crop rather than the full grow cycle. The published product information does not specify a per-gallon rate, so follow the rate printed on the Soul LBS label and the schedule for the base nutrient line you are running.

1. Establish your balanced primary fertilizer program first (Aurora Innovations recommends a base line such as Soul nutrients).
2. Begin adding Soul LBS as plants transition into and progress through flowering, when phosphorus and potassium demand rises.
3. Dissolve the measured dose fully in your feed water before applying to the root zone in soil or soilless media.
4. Follow the label rate; because the product is concentrated in P and K, do not stack it on top of an already complete bloom fertilizer without rebalancing the rest of the feed.
5. Observe plant response through the bloom cycle and adjust within label limits.

Sources & Further Reading