Cyco Nutrients - Platinum Series - SwellLate Stage Bloom Booster Delivers Bigger and Better Fruits Swell is formulated with nutrients that help to push plants to their limits during the final weeks of flower, with generous doses of phosphorus, potassium and magnesium. Phosphorus The phosphorus in Cyco Swell plays an essential part in photosynthesis, assisting with plant maturation and increasing their resistance to stress, increasing growth and encouraging bloom. The energetic reactivity of