Advanced Nutrients® is discontinuing the Advanced Nutrients Sensi Professional Series Water-Soluble Powder (WSP) line – also known as the Sensi Grow & Bloom Water-Soluble Powder – on a global basis. This article provides the context behind the decision, outlines the recommended alternatives, and offers practical guidance for growers planning their transition.
What’s Changing
The Sensi Professional Series WSP – comprising Sensi Grow Part A®, Sensi Grow Part B®, Sensi Bloom Part A®, and Sensi Bloom Part B® in water-soluble powder form – is being discontinued worldwide. This four-part base nutrient system has served commercial cultivators, licensed producers, and home growers for years, and Advanced Nutrients recognizes the role it has played in many operations.
Moving forward, the company’s professional base nutrient lineup is consolidated around two systems: the Cultivator Series™ (three-part WSP) and CS2™ Prime & Push (two-part WSP), part of the 8th-Generation Elite Series.
Why This Decision Was Made
The discontinuation of the Sensi Professional Series reflects a broader strategic effort to streamline the professional product lineup and direct growers toward systems that better align with the current demands of commercial cannabis cultivation.
When the Sensi WSP was developed, it represented a solid commercial option – a four-part system that split vegetative and bloom nutrition across separate A and B components. However, advances in formulation science, chelation technology, and a deeper understanding of cannabis-specific nutritional demands have produced systems that offer meaningful advantages in precision, simplicity, and cost-effectiveness.
Three factors drove this decision:
- Formulation advances. The Cultivator Series™ and CS2™ reflect newer approaches to solubility, nutrient delivery, and cannabis-specific formulation design for the operational demands of modern commercial cultivation.
- Operational efficiency. Reducing from a four-part system to either a three-part (Cultivator Series) or two-part (CS2) program simplifies inventory, mixing protocols, and feeding schedules – a practical benefit that compounds at scale.
- Consolidation around best-in-class products. Rather than maintaining overlapping product lines, Advanced Nutrients is concentrating its professional base nutrition around the two systems that deliver the most complete, cannabis-specific coverage available.
The Recommended Alternatives
Cultivator Series™ (Three-Part WSP)
The Cultivator Series is a three-part water-soluble powder system (Grow, Base, Bloom) designed for commercial cannabis production. It is the only 3-part WSP on the market engineered to address the cannabis phase-specific shift – the significant changes in macro, secondary, and micronutrient demands that occur as the plant transitions from vegetative growth through flower initiation, generative production, and finishing.
Key characteristics of the Cultivator Series:
- Cascading nitrogen delivery. Supplies nitrogen in three forms – ammoniacal (immediately metabolized), nitrate (stored and converted), and urea (slowly uptaken for sustained feeding) – compared to the single nitrogen form found in most competing products. This creates a continuous, phased supply that supports the plant’s nitrogen pathway more effectively throughout the cycle.
- Proprietary iron chelate blend. Delivers iron via three chelate forms (EDTA, DTPA, and ortho-ortho EDDHA), each with different pH absorption ranges and bioavailabilities. This blend supports consistent iron uptake across a wide pH range – a critical factor given that iron uptake by roots drops dramatically above pH 6.
- Phase-specific micronutrient placement. Micronutrients (boron, copper, iron, manganese, molybdenum, zinc) are formulated into the Grow and Bloom components rather than the Base. This allows growers to taper calcium and nitrogen independently in late bloom while maintaining the micronutrient levels critical for flower quality, terpene synthesis, and finishing. Competing products that tie micros to their calcium or nitrogen component cannot achieve this independent control.
- Competitive economics. Based on manufacturer feed charts at MSRP, the Cultivator Series delivers professional-grade nutrition at a favorable cost-per-gallon – a meaningful advantage for commercial operations managing tight input budgets.
- Seamless swap. The Cultivator Series integrates into any existing three-part protocol without requiring team retraining or complex workflow changes.
CS2™ Prime & Push (Two-Part WSP)
CS2™ (Cultivator Series 2) Prime & Push is the next evolution – a streamlined two-part water-soluble powder system and the base nutrient of the 8th-Generation Elite Series. It takes the proven science behind the Cultivator Series and refines it into a simpler, more effective format.
Key characteristics of CS2:
- Two-part simplicity. CS2 Prime (13-0-0) delivers nitrogen, calcium, and foundational nutrition from veg through late bloom. CS2 Push (0-11-24) provides the phosphorus, potassium, and micronutrients for the generative shift. Fewer bags, fewer mixing variables, and a cleaner protocol.
- Tetraplex Iron™. A proprietary complex of four iron chelates (including ortho-ortho EDDHA) – the result of nearly a decade of iron-specific research – engineered for superior uptake across all substrate conditions. Iron levels are increased by over 30% compared to previous formulations.
- Designed to pair with OVR™. For complete phase-specific coverage through finishing, CS2 is engineered to work with OVR™ (Overdrive 2.0) – the zero-nitrogen late bloom finishing solution that replaces your calcium source in the final two weeks before flush, supporting flower density, terpene profiles, and burn quality.
- Currently available in the USA for licensed producers, with global rollout underway.
Benefits of Transitioning
For growers currently running the Sensi Professional Series WSP, the transition to either the Cultivator Series or CS2 brings several practical and performance-related improvements:
- Improved solubility and fertigation performance. Both systems are formulated with the highest quality, fastest-dissolving inputs for clean flow through drip systems, emitters, Dosatron units, and all commercial irrigation setups. Less buildup, less maintenance.
- Simplified feeding programs. Moving from four parts to three (Cultivator Series) or two (CS2) reduces mixing complexity, inventory footprint, and the potential for dosing errors – especially valuable in large-scale operations managing multiple rooms or facilities.
- Enhanced consistency and yield potential. Phase-specific nutrient management – particularly the ability to independently control nitrogen, calcium, phosphorus-potassium, and micronutrient ratios across the plant’s life cycle – supports more consistent crop development and helps the plant express its full genetic potential for yield, potency, and terpene production.
- Cost-effectiveness. Both systems are designed to deliver professional-grade nutrition with favorable cost-per-gallon economics. The Cultivator Series in particular offers use costs that are significantly lower than the leading commercial alternatives.
- Better operational ROI. Fewer products, streamlined protocols, and consistent results translate to lower labor costs, reduced waste, and a more predictable bottom line.
Although this transition is especially relevant for commercial cultivators and licensed producers, home growers who have been using the Sensi Professional Series WSP can follow the same approach: evaluate the Cultivator Series and CS2 based on your preferred level of simplicity and control, and reach out to Grower Support with any questions about adapting the system to your setup.
How to Plan Your Transition
For current Sensi WSP users, the transition is straightforward. Both the Cultivator Series and CS2 are water-soluble powder systems compatible with the same irrigation infrastructure, mixing equipment, and substrate types you’re already using.
Consider the following when planning your move:
- Evaluate your operational preferences. If you prefer a three-part system with maximum ratio control, the Cultivator Series is your direct replacement. If you want the simplest possible protocol with the latest formulation technology, CS2 Prime & Push is the path forward.
- Use remaining Sensi WSP inventory. There is no need to discard existing stock. Finish your current supply and transition to the Cultivator Series or CS2 on your next order cycle.
- Run a side-by-side if you’d like. Both the Cultivator Series and CS2 are backed by Advanced Nutrients’ 100% Money-Back Grower Guarantee. If you’re not satisfied with the results, return the unused portion with your receipt within six months for a full refund.
Support and Resources
Advanced Nutrients’ support infrastructure is fully available to help current Sensi Professional Series users navigate this transition:
- Sales Team – For product ordering, pricing, and transition planning.
- Phone: (424) 435-1545 | Email: sales@advancednutrients.com
- Grower Support – For feeding schedules, application guidance, and cultivation questions.
- ACT Team – For facility-tailored technical support on the 8th-Generation Elite Series, including CS2™ and OVR™ integration.
Whether you’re operating a licensed production facility or growing at home, the team is ready to answer questions and help you determine which system fits your operation best.
Looking Ahead
The discontinuation of the Sensi Professional Series WSP is not a step away from commercial growers – it’s a step toward giving them better tools. The Cultivator Series and CS2 reflect Advanced Nutrients’ current direction for professional base nutrition, built on 27+ years of cannabis-specific research with a focus on solubility, simplified implementation, and operational consistency across cultivation environments.
Growers who have trusted Advanced Nutrients with their base nutrition can continue to do so with confidence. The science has moved forward. The products have moved with it.
To learn more about how cultivators around the world are getting results with Advanced Nutrients, visit our Cultivator Spotlights page.
For more information or to begin your transition, contact the Advanced Nutrients sales team at (424) 435-1545 or sales@advancednutrients.com.
