Sensi Cal-Mag Xtra 5L – Calcium, Magnesium & Micronutrient Supplement

Restore Nutrient Balance and Strengthen Plant Growth at Every Stage

Sensi Cal-Mag Xtra 5L is a specialised calcium, magnesium, and micronutrient supplement designed to correct and prevent common deficiencies that can occur in fast-growing plants—especially in coco coir, RO (reverse osmosis) water systems, and high-performance hydroponic setups.

Unlike standard cal-mag products that only supply calcium and magnesium, Sensi Cal-Mag Xtra also contains chelated iron plus a broader spectrum of trace elements that support chlorophyll production, healthy cell structure, and consistent nutrient uptake. This enhanced profile makes it particularly effective for stabilising growth patterns, improving leaf colour, and supporting strong development during demanding stages such as early veg, rapid stretch, and heavy fruiting.

It is compatible with all base nutrient programmes and can be used throughout the entire grow cycle as needed.

Key Features:

• Volume: 5L bottle – suitable for medium to large gardens

• Balanced Formula: Calcium, magnesium, iron, and supporting micronutrients

• Corrects Common Deficiencies: Yellowing leaves, weak stems, slow growth, blossom end rot

• Chelated Elements: Ensures high availability across all pH ranges

• Ideal for Coco & RO Water: Replaces minerals stripped out during filtering

• Versatile Use: Works with hydro, coco, soil, and soilless mixes

• Compatible with all nutrient lines: Can be added to any feeding schedule

• 1 × 5L bottle of Sensi Cal-Mag Xtra

• Tamper-evident cap

• Printed dosage chart and safety information on the label

How to Use the Product & Best Usage Recommendations

When to Use:

• To treat visible calcium or magnesium deficiencies

• As a preventative measure when using:

  • Coco coir

  • RO or soft water

  • High-intensity lighting (LEDs often increase Ca/Mg demand)

• During vegetative growth, early flower stretch, and fruit/bud formation

Dosage & Application:

General Feeding:

• 2 ml per litre of water
  Use as part of your standard feeding routine when plants show signs of deficiency or when using coco/RO systems.

For Severe Deficiencies:

• Up to 4 ml per litre for short-term corrective feeding
  (Always monitor EC and plant response.)

Usage Notes:

• Add Cal-Mag Xtra BEFORE your base nutrients to improve mixing stability

• Suitable for hand-watering, hydroponics, and automated systems

• Shake vigorously before every use

• Avoid combining with other cal-mag formulas to prevent mineral imbalance

Best Practice Recommendations:

• Maintain a consistent EC when supplementing—overfeeding Ca/Mg can block potassium

• LED growers should monitor plants closely, as LEDs increase calcium demand

• For coco growers:

  • Use Cal-Mag Xtra regularly until mid-flower

  • Pre-charge new coco with a light Cal-Mag solution before transplanting

• Store in a cool, dark place; do not allow the bottle to freeze

Sensi Cal-Mag Xtra is ideal for growers who want clean, stable mineral support that keeps plants strong, green, and efficient from start to finish.