In StockCanna Hydro
£35.96£39.95Save £3.99
In stock
Available from our Bristol shop
This item is too big for our parcel service, so we don't sell it for delivery on the website. Buy it in the shop, or contact us for a delivery quote.
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Description
Canna Hydro or Substra as it was originally called is the original nutrient from Canna engineered for run-to-waste hydroponic systems.
As substrates such as Rockwool and clay pebbles are inert Canna Hydro has been formulated to contain all the elements your plants need without causing too much to leach into the environment.
Canna Hydro has been designed to work with either hard or soft water and as such is available in two blends to suit either. As with all Canna nutrients, it is possible to lock up your plants if you overfeed them so take it easy with the overall level of feeding, and flush regularly for best results.
Also suitable for Perlite.
Key facts
| Type | Base nutrient for run-to-waste hydroponics, in Vega (growth) and Flores (flowering) |
|---|---|
| Growing media | Inert media such as rockwool, clay pebbles and perlite |
| Water | Two blends: one for hard water, one for soft water |
| Formerly | Sold as CANNA Substra |
| Dose | At the rate on the label |
| Sizes | 1, 5 and 10 litres, Vega or Flores, hard or soft water |
| Brand | Canna |
| Category | Base Nutrients |
How to use
Pick the blend that matches your tap water, hard or soft. Use Vega for growth, then Flores for flowering, at the rate on the label.
Rockwool, clay pebbles and perlite are inert, so everything the plant eats comes from the feed. Canna Hydro is made to supply it all without too much running off to waste. As with all Canna feeds it is possible to lock up a plant by overfeeding, so take it easy with the strength and flush regularly; see our flush products.
For systems where the feed runs back to the tank, use Canna Aqua instead.
Questions
Which do I need, hard or soft water?
The blend that matches your tap water. If you are not sure which you have, call the shop and we will help you pick.
Can I use Canna Hydro in a recirculating system?
It is made for run-to-waste. For recirculating systems such as NFT and flood and drain, CANNA make Canna Aqua.
Is Canna Hydro the same as Substra?
Yes. Canna Hydro was originally called Substra.
Growers’ guides
- Which Nutrients for Soil, Coco or Hydro? Base Feeds ComparedWhich plant nutrients to buy for soil, coco or hydroponics: the base feeds we sell compared, Plant Magic or Biobizz, hard or soft water, and how to choose.
- Perlite vs Vermiculite: What They Are and When to Use EachWhat perlite and vermiculite are, how they differ, which to use for seeds, cuttings, soil and coco, and the soils and mixes we sell with perlite in them.
- Clay Pebbles and Rockwool Cubes: How to Use Them in HydroponicsWhat clay pebbles and rockwool are, how to rinse, soak and plant in them, which hydroponic systems each suits, and how they compare with coco.
