28 February, 2021
growing weed indoor

Hydroponic cultivation of cannabis: flood irrigation

Hydroponic growing, or hydroponics, is the technique of growing indoor cannabis plants without soil. Cannabis is grown using an inorganic blend such as vermiculite, peat moss, or coconut fiber. There are two hydroponic growing systems: flood irrigation and active systems. In this article and in the following we will explain what hydroponic crops are and the materials you need to set them up in a grow room.

Hydroponic cultivation has its defenders and also its detractors. Since plants grow and develop faster than on land, they also require more care and dedication. The greatest advantage of hydroponics is that greater harvests are obtained in less time, since techniques such as SOG or SCROG that we have already explained in this Academy can also be implemented. The biggest drawback is that, since there is no substrate to buffer errors, any failure in the fertilization program can have major repercussions.

Cannabis flood irrigation

Flood irrigation is considered a passive hydroponics system since the water remains stagnant in the flood trays until the plants have fully absorbed it.

The materials you need to set up a hydroponic crop with flood irrigation are 12 cm high trays and some cultivation tables for greater comfort, although they can also be placed on the ground. Cannabis should be planted on inert absorbent substrates. Coconut fiber, vermiculite or peat moss are ideal for passive hydroponic cultivation.

Rockwool has a tendency to absorb too much water and to remain too wet. This can cause oxygen deficiency and less absorption of nutrients by the roots.

Once you have the cannabis planted in the pots with the appropriate substrate, you can place it in the trays. Be careful with the size of the pots. It should always be adequate for the size of the plant. To avoid drowning the roots, you can expect to flood water when the plants are well developed.

When watering with the nutrient solution, you just have to pour the water with fertilizer into the trays and wait for the plants to absorb it. If after 24 hours the plants have not drunk all of the fertilizer solution, you will have to remove it and adjust the amount in the next irrigations.

Experience tells us that the most common irrigation frequency is usually in 4 or 5 days.

Advantages of hydroponic cultivation of cannabis by flooding

Flood irrigation is very popular among growers since it is one of the few irrigation systems that allows you to forget about irrigation with little investment.

The other great advantage is that it accelerates the growth of plants. As the oxygen supply is greater in an inert medium, the absorption of nutrients is also accelerated. Cannabis plants develop faster and harvests are larger and earlier. The grower can control the nutrient solution so that the plants develop fewer leaves and more buds.

As we said at the beginning, it is not very suitable for beginners since you must be very careful with fertilizers. Any excess or defect goes directly to the roots and the consequences are immediate. On the other hand, as plants grow faster, additional tasks also increase, and more if you implement a SOG or SCROG technique.

All the materials you need to mount an irrigation system cannabis flood find: culture trays, supports for trays, substrates inert culture, pots and fertilizers. Take a tour of our store and discover all these products selected for you among the highest quality on the market. And of course, the seeds with CBD and seeds without CBD of the best breeders.


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