Which light cycle is best for vegetative growth is an often debated topic.
Best light cycle for clones.
Leave the light on 18 hrs per day for cloning.
As with hid lighting systems some of the higher wattage led are too intense for sensitive seedlings or clones.
They ll also need 6 hours of darkness to help the roots grow.
A power outage is one such event or if you need to unexpectedly change a light bulb.
For plants currently on a 12 12 light cycle a power outage won t do any damage unless it lasted for days and days.
The light cycle for clones should be 18 hours on 6 hours off.
Try to give the clones as much light as possible.
I get this question frequently so i decided to set up an experiment to demonstrate.
Clones need 18 hours of light to grow a strong stem and healthy leaves.
Blue light helps the root system and red light helps with plant.
Lights are on 24 hours and off 0 hours.
These things can interrupt your light cycle and can therefore have consequences for your plants.
In the cannabis community light cycles are expressed as a fraction with lights on time over lights off time.
Soon as i see the hairs i go 12 12 and even then after 2 weeks i start reducing 15 min a week til harvest.
Once clones are well rooted place them under 12 12 or 18 6 light and dark cycle to induce them for flowering.
More light makes clones root faster.
Here we review the basics and explain why we prefer an 18 6 light cycle.
There are two spectrums of light that plants need but the best light spectrum for clones is red and blue.
For clones and seedlings the lower wattage led units are the most efficient and effective choice.
Which light spectrum is the best for seedlings and clones is an ongoing debate.
Cloning cannabis during flowering time cloning marijuana plants during the early stage of flowering is possible but in doing so expect that it will take a number of weeks to revert them back into the vegetative phase.
The light cycle for clones is simple.
The advanced light cycle for marijuana growing will save you time and money allowing for more quality plants and marijuana buds.
Advanced marijuana growing light cycle.
If using a horizontal 400w.
If using fluorescent lights or cfls you can keep the light 1 or 2 inches over the top of the dome.
Usually giving me around 10 hrs light at the harvest.
I cut a tray of clones and started them inside the clone dome with my usual technique but this time i put them near a 4 bulb florescent t5 light fixture.
The 24 grow light cycle will cause the mother plants and clones to grow at such a fast rate that it may become a problem with space and light.
Now place the dome on the cloning tray with the new clones inside.