Posted on

propagating cannabis seeds in rockwool

Completing the CAPTCHA proves you are a human and gives you temporary access to the web property.

If you are at an office or shared network, you can ask the network administrator to run a scan across the network looking for misconfigured or infected devices.

What can I do to prevent this in the future?

Another way to prevent getting this page in the future is to use Privacy Pass. You may need to download version 2.0 now from the Chrome Web Store.

If you are on a personal connection, like at home, you can run an anti-virus scan on your device to make sure it is not infected with malware.

Cloudflare Ray ID: 6649daa3f8d8fe30 • Your IP : 185.230.143.81 • Performance & security by Cloudflare

Do not add any nutrients to your Rockwool Cubes. The one on the left got nutrients, the other two did not.

If you put more than one seed in your cube (just in case one didn’t make it), than you probably have several seeds sprouting up in each cube at the end of

To accomplish this, use either Ph down chemicals, or lime juice (as it’s acidic). Add these to the water in small increments (VERY SMALL), and test the water to see where the Ph is. Continue doing this until you have a Ph of 5.5-6.

Important: Do not let the PH of the water go below 5. A Ph this low will damage the fibers of the Rockwool Cube

Rockwool Cubes have a PH of roughly 7.8. This is pretty alkaline, yet our plants prefer to grow in a slightly more acidic environment (between 5.5 – 6.5). In order to prepare our Rockwell cubes for the seeds, we need to soak them in some PH adjusted water, that way they have everything the seeds need to germinate and sprout; water and a slightly acidic environment.

Items you will need:

Here is what it should look like:

In this lesson, we will learn how to start your own seed with Rockwool Cubes. Below is a detailed guide to success with Rockwool, and a step-by-step video tutorial can be found at the bottom of the page.

2. Submerge your blocks into the solution and leave them to soak for 24 hours. After a while, the alkalinity of the blocks will raise the pH of the solution. Return to the blocks once every few hours to test the solution. Re-apply the pH-down product as needed to maintain a reading of 5.5.

3. After 24 hours have passed, fill up another bowl with 1 litre of water. Add your organic nutrient solution, fungi, and bacteria to the bowl in the quantities stated on the instructions. Soak the blocks in the solution for another two hours.

The flowering phase is very similar between soil and hydroponic grows. Here are the main factors to consider.

Vegetative Phase

When your seedlings/cuttings have outgrown their blocks, you’ll need to move them into your hydroponic setup. Before we explain how to do this, here are the best and most suitable systems to use alongside Rockwool blocks.

There are many benefits to growing cannabis with Rockwool, especially when doing so hydroponically.

Now that you know everything about Rockwool cubes, including their pros and cons, how should you go about using them when growing weed?

Try and refrain from overwatering your Rockwool cubes during the seedling stage. They drain quite fast, and many growers get the impression that they’re underwatering. However, the inside of the cube remains nice and moist and will keep your seedlings happy without suffocating them.