However, even media like rockwool have enough plant nutrients to help seeds in their early stages until they are transplanted into a complete hydroponic system.
If you are interested in starting seedling for hydroponic, you will be happy to note that most seed starting systems need minimum equipment. You need a growing light but it is not a must. If you just have a growing medium, you can water it with nutrients to make the seeds into seedlings.
How to start seedling for hydroponic:
Hydroponic seed starting is an excellent way to protect seedling from soil borne diseases and it also affords a lot of ease.
- Place rockwool in a shallow tray. Make sure that the rockwool is in cubes. Now saturate the cubes with 1/2 strength nutrient solution. Adjust the pH to about 6.2
- Take seeds and sow them into the rockwool cubes. Use 2 to 3 seeds per cube
- Now water the cubes with 1/2 strength nutrient solution and it is important that you keep the cubes moist at all times.
- You can keep the tray under light for 18 hours a day until the seedlings are 4 to 6 inches tall
- After that transfer the cubes to pre-soaked rockwool slabs. Make sure you have made two holes at the bottom of the slab.
- You have just started seedlings for hydroponics.
- Now transfer the rockwool slab to your hydroponic system and make sure that the slab is saturated with nutrient solution.
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