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when to put marijuana seeds under lights

Bonjour,
Concernant les tubes fluorescents normaux ( 18-36 W ), que me conseiller vous ?
Tubes normaux de couleur blanche, ou tubes horticoles de couleur rosée ( comme ceux qu’ont peut trouver sur les aquariums ).
Merci pour vos réponses.

My sprouts are about 2 1/2 – 3 inches tall. They have produced the first and second smooth leaves, as well as the first serrated leaves. They also have the second, tiny serrated leaves coming out. But the initial leaves have turned slightly yellow. I’m concerned that I am, perhaps, overwatering? Any suggestions will be welcomed. (Thanks for the suggestion for moving air. I will try that to strengthen the stems because they will go outside once the threat of frost has passed.)

I hope you continue to enjoy the blog.

When to plant your cannabis seedlings outside?

In general, seedlings intended for outdoor growing should be kept by a sunny window for the first week or two after emerging from the soil. When they have grown their second or third set of serrated leaves seedlings are usually hardy enough to flourish in direct sunlight.

no light needed until they grow above the dirt

If outdoor temperatures are suitable, seedlings may be acclimatised to direct sunlight by giving them progressively longer daily exposure to outdoor conditions.

With best wishes,

Place the seeds in a glass of warm water, move them to a dark environment, and within about 24 hours, the taproot should begin to poke through.

They may end up soaking up more moisture than expected, so be sure to check on them throughout the process and add more water if needed. Not too much though, just enough to keep the paper towels damp.

The concept here is to use a piece of growing medium, such as widely available peat pellets, and to plant the seeds directly into it.

2. Soaking Overnight

Always avoid seeds that are light green, as they have not aged long enough to sprout. More mature seeds are darker in color and almost brown.

If it has not, the seeds should be moved to a different environment as too much water can drown them. 24-36 hours is the maximum recommended time for this and is only needed on seeds that have dried out for a long period.

This technique is really popular and recommended even for the most novice of growers.

Simply take the seeds and place them between a couple of wet paper towels. Next, take the towels and put them between two plates to create a sort of protective, dark dome. Finally, make sure it all stays relatively warm (70F-90°F) and after several days the seeds will begin to sprout.