Canna has developed Substra for use in inert growth mediums such as rockwool, grow rocks, perlite and vermiculite in "run to waste" (non-recirculating) systems. Substra ensures large yields, as it enables the grower to precisely control the supply of nutrients during the growing and blooming phases of fast-growing plants. Substra Vega has been developed specially to meet the plant's needs in the first phase of plant growth. This stage is very important, as the basis is laid for the subsequent blooming stage. Healthy and strong growth is characterized by vital growth shoots and luxuriant root development. Full absorption of nutrients and water penetration from the start of growth are guaranteed by Substra Vega's large quantities of direct-absorption nitrogen compounds and high-grade trace elements. Always use the A and B parts in equal amounts.