Canna Substra Flores A

Canna Substra Flores A is a professional two-part flowering nutrient designed for inert run-to-waste hydroponic systems. Part A provides the potassium, phosphorous, and trace elements that plants demand during the bloom phase, working alongside Substra Flores B to deliver a complete, balanced feed. It is formulated for use with rockwool, clay pebbles, and other inert substrates where drain-to-waste irrigation is used.

Canna Substra Flores A Specifications

Specification	Value
Brand	Canna
Product Name	Substra Flores A
Product Type	Professional two-part flowering nutrient (Part A)
Growth Phase	Flowering / Bloom
System Type	Inert run-to-waste (drain-to-waste) hydroponic systems
Compatible Substrates	Rockwool, clay pebbles, and other inert growing media
Used With	Canna Substra Flores B (required for complete feed)

Why Choose Canna Substra Flores A

CANNA is a Dutch nutrient company with a long focus on professional hydroponic cultivation. The Substra Flores line is built specifically for the demands of the bloom phase in inert systems — a context where the grower relies entirely on the feed solution, with no soil buffer to correct mistakes.

• Formulated for the bloom phase: During flowering, plants reduce their nitrogen uptake and sharply increase demand for potassium and phosphorous. Substra Flores A is calibrated for this shift, so you are not feeding a generic nutrient that happens to work at bloom rates.
• Built for run-to-waste systems: Run-to-waste irrigation (drain-to-waste) allows precise control of the nutrient solution that reaches the root zone. Substra Flores A is designed to work cleanly in these systems without precipitating or clogging irrigation lines.
• Two-part system for stability: Splitting the nutrient formula across an A and B part prevents certain mineral salts from reacting with each other in concentrate form. Each part is stable in the bottle; they combine correctly only in the diluted reservoir or irrigation line.
• Professional-grade formulation: The canonical description identifies this as a complete professional nutrient, meaning all required macro and micronutrients for the flowering phase are included. Growers running inert substrates do not need to add separate trace element supplements to the Substra Flores system.

Best Uses for Canna Substra Flores A

Substra Flores A is a focused product for a specific growing context. It performs best under the following conditions:

• Run-to-waste rockwool systems: Slabs, cubes, or propagation trays filled with rockwool are the primary target substrate. The inert mineral wool holds moisture and oxygen without contributing any nutrients, making a precision feed like Substra Flores A the sole nutrient source.
• Clay pebble (hydrocorn) flood-and-drain or drip systems: Clay pebbles provide excellent drainage and air porosity. When used in a drain-to-waste configuration, Substra Flores A delivers clean, balanced nutrition at each irrigation cycle.
• Commercial and hobbyist bloom rooms: Whether running a single flowering tent or a larger dedicated bloom space, Substra Flores A integrates into any setup that uses inert media and a scheduled irrigation controller.
• Growers transitioning off soil or coco: If you are moving to a fully hydroponic inert system for the first time, the Substra line gives a clean entry point — the formula is designed for the stripped-down nutrient environment of inert run-to-waste rather than being adapted from a soil product.

Pair Substra Flores A with a reliable pH and EC meter to monitor the nutrient solution. If you are also running a grow light upgrade, see the Eye Hortilux 600W Ceramic HPS Grow Light Bulb as a high-output bloom lamp option commonly used alongside professional nutrient programs. Growers who need controlled storage for harvested material often keep a CVault humidity-controlled storage container on hand at the end of the flowering cycle.

Dosing Guidelines

Always use Substra Flores A together with Substra Flores B to form a complete nutrient solution. Never mix the two parts directly in concentrate form — add each separately to your reservoir or mixing tank and stir between additions.

General dosing approach for inert run-to-waste systems:

1. Start with fresh, pH-neutral water (reverse osmosis or low-EC tap water is ideal for inert systems).
2. Add Substra Flores A at the manufacturer’s recommended rate for the current week of the flowering stage. Refer to CANNA’s published feed chart at canna.com for specific ml/L dosing.
3. Add Substra Flores B at the same rate, stirring the solution between each addition.
4. Check and adjust EC to the target range for the flowering week. CANNA’s feed charts specify EC targets by week.
5. Adjust pH to the appropriate range for your substrate — typically 5.5–6.2 for inert rockwool or clay pebble systems.
6. Irrigate to produce 20–30% runoff to prevent salt accumulation in the medium.

Do not use Substra Flores with recirculating (recirculating NFT or DWC) systems — the Substra line is engineered for drain-to-waste. For recirculating systems, CANNA produces the Aqua line instead.

Sources & Further Reading