Grotek Organic Green Line Vital – Water-Soluble Calcium Fertiliser for Soilless, Coco & Hydroponic Growing

Grotek Organic Green Line Vital is a water-soluble calcium fertiliser providing an immediately plant-available source of calcium in acetate form. Unlike calcium carbonate, the acetate form is fully water-soluble with no lag between application and uptake, making it ideal for soilless, coco, and hydroponic systems. Ultra-low chloride content helps prevent the build-up of potentially phytotoxic chloride molecules in the root zone.

Key Features

• Calcium in acetate form – fully water-soluble and immediately plant-available
• Ultra-low chloride content – prevents phytotoxic chloride build-up
• Supports nitrate uptake and metabolism – calcium is essential for nitrates in solution
• Optimises starch metabolism and catalytic plant functions
• Suitable for all growing systems – essential for coco growing
• Can be used as an isolated calcium supplement to dial in precise calcium levels

How to Use

• Soilless media and hydroponic systems: use throughout the full growing cycle
• Outdoor soil gardens: apply 2–4 times per season
• Refer to the Grotek feeding schedule for specific dosage rates

Ideal For

Growers running coco, soilless, or hydroponic systems where calcium availability is critical. Particularly recommended for coco growing, where calcium supplementation is essential due to coco’s natural cation exchange properties.