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Growth Medium.

Firstly, what's a substrate?

A substrate is a material base, a support, a compost that allows to receive any organic element in order to ensure development and durability. The substrate in which the plant grows is important in order to obtain great yields. It protects the roots from light and let them breathe. The substrate vehicles the nutritive solution to the roots.

In which form do we find substrate?

The substrate can be found in the form of pots, but also in Slabs ( Rockwool, Speed Grow, coconut fibre, ...).

- Organic and earthy substrates: The composts Lightmix and Allmix of the brand Biobizz are alive substrates. It consists of micro-organisms that favour the life and the symbiosis of the roots in the soil. The earth is a complex substrate. It consists of diverse compounds such as humus, perlite, peat, peat moss, etc.)

- The inert substrates: Rockwool, coco from the brand U-Gro ( bags, U-Groc pots, packed, ...), clay pellets, which are generally substrates without nutrients and without (or a few) minerals.

- Germination earth: without fertiliser in order to prevent the seeds and the cuttings from being burned.

- Coconut fibre: This material in the form of bread or untreated that you have to put into pots or in slabs. The coconut fibre is made from a grated coconut peel, treated after. Advantages: reusable if being disinfected between each use. Rather bargain and originally deprived of parasite.

- Clay pellets: This material looks like small brown balls used to recover flower pots. The granules are obtained thanks to a heat treatment of the clay. Expanded clay possesses a good insulating power, what is necessary to protect the roots from any temperature changing. It consists of silica, aluminium oxide, iron oxide and sulphur. Its retention capacity corresponds with 15% in mass. It is usually used for container culture, drip tray systems, and, on a smaller scale, for hydroponic continuous flow systems. Contrary to the rockwool, clay pellets are long-lasting, healthy, organic and ecological substrates.

- Rockwool: The rockwool is a substrate that has to be treated before using. You will have to stabilise the pH to start growing, considering its original pH as very alkaline, close to 7. The slabs will be soaked during 24 hours in a nutritive solution with a pH of 4.5 and an EC of 0.5-0.6 in order to begin a cannabis culture from the seeds without being afraid of seeing that the plantlets have a lack of nutrients from the start.

- Speed Grow: The speed Growcan be found in the form of slab, cube or bags. It is manufactured from earthwool (rockwool and organic matter). Ready to use, you just have to water it with distilled water to finally use it.



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