Canna Substra Vega (A) – 1 Liter

Canna Substra Vega (A) is Part A of a professional two-part nutrient system designed specifically for the vegetative growth phase. It is formulated for inert, run-to-waste hydroponic systems such as rock wool, providing plants with directly absorbable nitrogen compounds and trace elements right from the start of cultivation. This 1-liter bottle is used in combination with Substra Vega (B) to deliver complete nutrition during the grow phase, supporting strong root development and healthy side shoot growth.

Canna Substra Vega (A) Specifications

Key technical details for Canna Substra Vega (A) 1 Liter, derived from supplier and manufacturer data.

Specification	Value
Brand	Canna
Product Line	Substra Vega
Part	A (used alongside Part B)
Growth Phase	Vegetative (Vega)
Volume	1 Liter
Weight (shipping)	~2.00 lb
System Compatibility	Inert, run-to-waste systems
Suitable Substrates	Rock wool and all inert media
Key Inputs	Directly absorbable nitrogen compounds, trace elements
Water Version Options	Hard water and soft water versions available

Why Choose Canna Substra Vega (A)

Canna Substra Vega is a professionally developed nutrient line with a clear focus: giving plants the right inputs during the vegetative stage when they are building the root system and shoot structure that will ultimately determine final yield. Here is what makes Part A of this system worth considering for an inert-media grow.

• Purpose-built for inert run-to-waste systems. Most hydroponic nutrient lines work in a variety of media, but Substra Vega is specifically engineered for rock wool, clay pebbles, and other inert substrates where the substrate itself contributes no buffering or background nutrition. This means the formulation is calibrated to deliver complete nutrition without relying on any background mineral content from the medium.
• Directly absorbable nitrogen and trace elements. The nitrogen in Substra Vega is provided in forms that plants can take up immediately, rather than forms that require microbial conversion. In a sterile inert medium, that distinction matters: there is no microbial activity to convert slow-release nitrogen, so using a formulation with readily available nitrogen supports uptake from the first watering.
• Supports root development and side shoot growth. During the vegetative phase, the plant is laying down the structural foundation for its eventual canopy and root mass. Substra Vega is formulated to promote this, with a nutrient profile that supports luxuriant root development and strong lateral branching.
• Hard water and soft water versions available. Water chemistry varies significantly between growing regions. Canna offers Substra Vega in both a hard water and a soft water formulation, so growers can match the product to their actual tap or RO water profile rather than adjusting for the wrong baseline.
• Part of a complete two-part system. Part A is used alongside Part B at equal ratios. Using both parts together delivers the full nutritional spectrum Canna designed for this phase, avoiding any gaps that come from using a single-part nutrient in a demanding inert-media environment.

Best Uses for Canna Substra Vega (A)

Substra Vega is a narrowly focused product: it is designed for one phase (vegetative) and one system type (inert, run-to-waste). Within that scope, it performs as a complete primary nutrient rather than an additive.

• Rock wool slab and block systems. Rock wool is the canonical substrate for inert run-to-waste cultivation. Substra Vega was developed with rock wool in mind, making it the natural primary nutrient choice for slab-based systems where irrigation frequency and EC management are the main levers.
• Other inert media — clay pebbles, perlite, stonewool loose fill. Any substrate that does not contribute organic buffering or mineral nutrition is a candidate for Substra Vega. The formulation does not rely on substrate-borne biology, so it transitions cleanly to any inert grow medium in a run-to-waste configuration.
• Vegetative propagation and early growth stages. From transplant through the end of the vegetative phase, Substra Vega provides the nitrogen-heavy nutritional profile that fast-growing plants need before they transition to flowering. It is not intended for use during bloom — for that, Canna offers the Substra Flores line.
• Commercial and hobby indoor grows requiring consistent nutrition. Because Substra Vega is a two-part liquid concentrate, it is easy to measure, mix, and repeat across multiple reservoirs or irrigation lines. Growers running multiple benches or tables who need consistent EC targets across a crop benefit from the precision a two-part liquid system provides. If you are also supplementing your crop during root development, products like Heavy 16 Roots can be used alongside primary nutrient programs to further support root mass establishment.
• Hard water regions where standard nutrients require adjustment. For growers dealing with high-carbonate tap water, choosing the Substra Vega hard water version removes the need to compensate for the baseline mineral load that comes in through the tap. This simplifies EC and pH management significantly.

Compatibility

Canna Substra Vega (A) is designed for a specific category of hydroponic system. Understanding where it fits — and where it does not — will help you decide whether it is the right nutrient for your setup.

System type: Run-to-waste (drain-to-waste) systems using inert substrates. The formulation assumes the irrigation solution is applied to the medium and the excess drains away rather than recirculating back into a reservoir. This matters because recirculating systems accumulate salts differently, and Substra Vega’s dosing and EC targets are calculated for run-to-waste dynamics.

Substrate: All inert growing media — rock wool slabs and blocks, loose rock wool, expanded clay (LECA), perlite, and similar substrates that have no buffering capacity or organic nutrient content. Substra Vega is not formulated for soil or coco coir, where the substrate’s own buffering chemistry interacts with the nutrient solution. For coco coir cultivation, Canna makes a separate product line (Canna Coco).

Part A + Part B together: Substra Vega (A) must be used alongside Substra Vega (B). Neither part alone provides a complete nutritional profile. Always add Part A and Part B separately to your reservoir or irrigation solution — do not pre-mix the concentrates, as they are kept in separate parts to avoid precipitation of calcium and phosphate compounds before dilution.

Water version selection: Match the product version to your water supply. Soft water (typically under 200 ppm hardness / under 200 µS/cm EC) should use the soft water version. Hard water (above roughly 200 ppm or with significant calcium/magnesium carbonate content) should use the hard water version. If you are working with RO or very soft water and supplementing with a microbial additive or similar amendment, confirm compatibility with the specific additive before combining.

Growth phase: Substra Vega is a vegetative-phase product. It is not intended for use during the bloom/flowering phase. Switch to Substra Flores at the point of flowering induction.

Dosing Guidelines

Specific dose rates for Substra Vega are published by Canna in their grow schedule and should be followed for your specific crop and growth stage. The general principles below apply to all two-part inert-media nutrients and are grounded in how Substra Vega is designed to be used.

• Measure Parts A and B separately. Never add Part A concentrate directly to Part B concentrate. Always dilute each part into water separately before combining them in the reservoir, or add them sequentially to a pre-filled reservoir while stirring. This prevents precipitation of insoluble calcium phosphate that would remove both calcium and phosphorus from the solution.
• Add Part A first, stir, then add Part B. The standard procedure for two-part nutrients is to add the calcium-containing part (typically Part A) first, mix it thoroughly into the water, and then add Part B. This ensures calcium is fully diluted before phosphorus is introduced.
• Target EC for the vegetative stage. Canna’s published grow schedules specify EC targets by week and growth stage. Run-to-waste systems are typically managed to an EC target at the dripper (input EC) and monitored via runoff EC to detect salt accumulation. Consult the Canna grow guide at canna.com for the specific EC range appropriate to your crop and system.
• Adjust pH after mixing the full nutrient solution. Mix all nutrient components (Part A, Part B, and any additives) before checking and adjusting pH. The final solution pH should fall within the range recommended for your substrate. For rock wool, Canna typically targets 5.5–6.2 depending on the growth stage. Add pH-up or pH-down to the fully mixed solution, not to the concentrate.
• Start at a reduced dose for young plants and seedlings. Newly transplanted cuttings or young seedlings are sensitive to high EC. Begin at a lower dose rate and increase progressively as the plant establishes in the medium. Refer to Canna’s feed chart for the ramp-up schedule specific to Substra Vega.

For the complete, week-by-week feed schedule for Substra Vega, visit canna.com and look for the Substra grow guide.

How to Use Canna Substra Vega (A)

1. Confirm you have both parts. You need Substra Vega (A) and Substra Vega (B) to make a complete vegetative nutrient solution. Have both on hand before mixing.
2. Start with fresh water in your reservoir or mixing container. Use your base water — RO, tap, or well water — at the volume you intend to mix. Choose the hard water or soft water version of Substra Vega that matches your water supply.
3. Shake the bottle of Part A. Concentrated liquid nutrients can stratify during storage. Invert and shake the bottle before measuring to ensure the concentrate is fully homogeneous.
4. Measure Part A using a calibrated syringe or measuring cup. Follow Canna’s current grow schedule for the dose rate appropriate to your crop’s growth stage and your system’s volume. Add the measured volume of Part A to the water and stir or circulate to ensure complete mixing before adding Part B.
5. Measure and add Part B. Using a separate measuring instrument (do not reuse the same syringe without rinsing), measure the dose of Part B and add it to the reservoir. Stir or circulate thoroughly.
6. Add any compatible additives. If you are using root stimulants, enzymes, or other supplements — such as those aimed at supporting root zone health, like Earth Juice Hi-Brix Molasses for organic supplementation approaches — add them after the base nutrient parts are fully dissolved. Check compatibility with Substra Vega before combining.
7. Check and adjust EC. Measure the EC of the complete solution and compare it to the target EC for your crop’s current growth stage per the Canna grow schedule. If EC is too high, dilute with additional water. If too low, add small additional doses of Part A and Part B equally.
8. Check and adjust pH. Measure the pH of the fully mixed nutrient solution. Adjust to the target range for your substrate (typically 5.5–6.2 for rock wool in the vegetative stage). Add pH-up or pH-down in small increments, re-stir, and re-measure before applying.
9. Apply to plants according to your irrigation schedule. In run-to-waste systems, irrigate to achieve the target runoff percentage (typically 20–30%) to prevent salt accumulation in the substrate. Monitor runoff EC at each irrigation to detect build-up.
10. Store unused concentrate properly. Recap the bottle tightly and store in a cool, dark location away from direct sunlight and freezing temperatures. Properly stored Substra Vega concentrate has a long shelf life.

Sources & Further Reading