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CANNA SUBSTRA / ROCKWOOL

Substra feeding strategy

With inert substrates such as rockwool, nutrient solution and irrigation need to be managed as one system — not reduced to a single EC target.

RockwoolVega → FloresRun-to-waste principles

SYSTEM REFERENCE

Manage nutrient + irrigation together

CANNA's global technical library for inert run-to-waste cultivation emphasizes source water, EC/pH, drainage and stage-specific Vega/Flores nutrition.

SubstrateInert media such as rockwool
Base-nutrient structureUse Vega in the vegetative stage and Flores in the generative stage
MonitorInput EC/pH, drainage, irrigation frequency and plant response
Water qualitySelect the appropriate product/variant for local water conditions according to the local label and technical guidance
HC application rateSee the official V26.02 Substra HC phase-by-phase schedule below
Important: The table below is the manufacturer Substra HC reference. Standard-concentration Substra and other CANNA product lines should use their own corresponding label/schedule.

WORKFLOW

Management sequence

  1. Characterize source water and baseline EC before adding nutrients.
  2. Select Vega or Flores according to crop stage.
  3. Add A to water first and mix thoroughly, then add an equal amount of B according to the label.
  4. Check input EC/pH before irrigation and observe drainage/runoff after irrigation.
  5. Adjust irrigation frequency and nutrient strength from substrate behavior and plant response rather than a single EC target alone.

OFFICIAL GROW SCHEDULE REFERENCE

CANNA Substra HC grow schedule

Manufacturer reference V26.02 for high-concentration Substra. It shows the Vega → Flores transition, stage-specific EC ranges and the supporting-product timing.

Open Feeding Calculator
Manufacturer reference · V26.02ml per 10 LEC mS/cm
Product / measureVegetative phaseGenerative phase
RootingIIIIIIIIIIIIVIVIV
D1-5D6-25W1W2W3W4W5W6W7W8W9
Light hours1818121212121212121212
Dosages in ml per 10 L
SUBSTRA HC VEGA A12–1614–1714–1714–17———————
SUBSTRA HC VEGA B12–1614–1714–1714–17———————
SUBSTRA HC FLORES A————15–1815–1815–1815–1813–1611–15—
SUBSTRA HC FLORES B————15–1815–1815–1815–1813–1611–15—
CANNA RHIZOTONIC XP4020202055555——
CANNAZYM—252525252525252525–50*25–50
CANNABOOST——20**2020–4020–4020–4020–4020–4020–4020–40
CANNA PK 13/14———————15———
EC / mS/cm
EC water0.40.40.40.40.40.40.40.40.40.40.4
EC nutrition1.4–1.81.6–2.01.6–2.01.6–2.01.6–2.01.6–2.01.6–2.02.0–2.51.4–1.81.2–1.6—
EC total1.8–2.22.0–2.42.0–2.42.0–2.42.0–2.42.0–2.42.0–2.42.4–2.91.8–2.21.6–2.00.4
* Double CANNAZYM to 50 ml/10 L when substrate is reused. ** CANNABOOST may be increased to a maximum of 40 ml/10 L through flowering.
For longer vegetative growth, repeat the D6–25 recommendations. For longer flowering, repeat W3–W5. Add CANNA PK 13/14 in the period 3–4 weeks before harvest. The source schedule uses the product name RHIZOTONIC XP; local naming/availability can differ.

Source: CANNA SUBSTRA HC Grow Schedule V26.02 supplied in the CANNA technical documentation set.

TECHNICAL CONTEXT

Global references for inert-media principles

CANNA's global inert run-to-waste resources use stage-specific Vega/Flores nutrition, hard/soft-water variants and EC/pH plus drainage monitoring. These resources are useful for understanding rockwool management, while CANNA Substra Thailand should follow its own label and technical schedule.

Manufacturer references: CANNA HYDRO / inert systems · Run-to-waste systems · CANNA Grow Guide

Need a facility-specific Substra schedule?

Share source water, substrate, crop stage and irrigation setup with CANNA Thailand to adapt the program.

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