CYCO™ Platinum Series Swell 1-5-3 — 5 gal

CYCO™ Platinum Series Swell 1-5-3 (5 gal) — Phosphorus, Potassium & Magnesium Bloom Supplement for Optimized Flowering

CYCO™ Platinum Series Swell is a precision bloom supplement that combines phosphorus, potassium, and magnesium — three nutrients with distinct and critical roles in the flowering and fruiting phases of plant development. With an NPK of 1-5-3, Swell delivers moderate phosphate to sustain bloom energy and reproductive site metabolism, meaningful potassium to drive cell wall development and carbohydrate synthesis, and a secondary magnesium component that supports chlorophyll production and photosynthetic efficiency during the intensive flowering cycle.

Magnesium is often underrepresented in standard bloom formulas despite its central role in photosynthesis — it is the core atom of the chlorophyll molecule and an essential cofactor for ATP synthase, the enzyme responsible for energy production from photosynthesis. During the flowering stage, when photosynthetic demand is high and energy expenditure on reproductive development is intense, adequate magnesium supply directly supports the plant's capacity to sustain energy production and channeling into productive flowering. Swell's 1-5-3 combination addresses this nutritional dimension alongside the standard P+K bloom support, delivering a more complete flowering supplement designed to maximize the plant's productive capacity during the bloom phase.

Key Features & Benefits

• 5% Phosphate for Bloom Energy Production: Moderate available phosphate sustains ATP synthesis and the energy-intensive processes of flower site development and reproductive growth through the mid-to-late bloom cycle.
• 3% Potassium for Flower Development: Soluble potash drives cell wall synthesis, carbohydrate transport, and osmotic regulation — supporting the structural development and density of developing flowers through the bloom phase.
• Magnesium for Photosynthetic Support: Magnesium supplementation supports chlorophyll production and ATP synthase function, sustaining photosynthetic efficiency during the energy-intensive flowering cycle when magnesium demand often peaks.
• Low Nitrogen (1%) — Bloom-Stage Safe: Minimal nitrogen keeps the formula compatible with the low-N conditions of the flowering stage without adding vegetative drive to the nutrient solution.
• Optimized Flowering Performance: The combined P-K-Mg profile addresses multiple nutritional dimensions of the bloom phase simultaneously — energy production (P), structural development (K), and photosynthetic efficiency (Mg).
• 5 Gallon Commercial Format: Designed for high-throughput commercial growing operations requiring sustained supply for full-season bloom supplementation programs.

Who Should Use This

Swell is ideal for indoor cultivators and commercial greenhouse operators who want to address all three key nutritional dimensions of the flowering phase — phosphate energy, potassium structure, and magnesium photosynthesis — in a single complement to their base bloom nutrition. Particularly valuable in growing environments where magnesium deficiency is a recurring challenge, or where high light intensity and fast-paced production schedules push photosynthetic demand beyond what standard bloom formulas support.

Compatibility

Designed for use within the CYCO Platinum Series bloom program alongside Bloom Parts A and B. Add at the recommended rate per the CYCO feed chart during the flowering stage. Compatible with all hydroponic systems and growing media. Monitor solution EC and Mg levels and adjust calcium-magnesium supplementation as needed when using alongside other magnesium-containing products.

Frequently Asked Questions

Why is magnesium particularly important during flowering?

Magnesium is the central atom of every chlorophyll molecule — without it, chlorophyll cannot be synthesized. It is also an essential activator of ATP synthase, the enzyme that drives photosynthetic energy production. During flowering, when the plant is simultaneously producing flowers and maintaining leaf photosynthesis to fuel that production, the demand for magnesium increases significantly. Deficiency during this phase can cause interveinal chlorosis, reduced photosynthetic output, and compromised energy delivery to developing flower tissue.

Can I use Swell if I am already using a calcium-magnesium supplement?

Yes, but monitor total magnesium delivery from all sources to avoid excess. When using both Swell and a dedicated cal-mag supplement, track the combined magnesium input and adjust one or both product rates to stay within the target range for your crop. Excess magnesium can interfere with calcium uptake.

When during the flowering cycle is Swell most effective?

Swell is most impactful from early flower through the mid-to-late bloom stage — use from the first signs of flowering through peak development. Follow the CYCO Platinum Series feed chart for specific weekly rate recommendations through the bloom cycle.

Is Swell compatible with CYCO Supa Stiky and Potash Plus?

Yes. All three are part of the CYCO Platinum Series bloom program and are designed to work together. When using multiple bloom supplements simultaneously, monitor total solution EC from all inputs combined and adjust rates to maintain target EC levels for your specific crop.