I am using a HLG 260XL, have been told at full power may be too much for seedlings?? So I’ve turned it down to 50% power but when do I increase. ? A little as they approach Veg or at veg or later??? Slowly or just crank it up at a particular point?? Thanks again .
Once you have 4-5 sets of fan leaves you should be able to turn up the power for veg
Should I turn it to max or gradually over a few days and to what level iE: 3/4 , full for Veg?? I know I want it at max for flowering but does it need to be lower for Veg? I’m in a 2x4x5 ft tent. Have the light at about 12 inches now due to some stretch on 3rd day above ground. Stretch stopped and leaves are developing as expected. I will raise light as they develop I assume as well as when I turn it up.
Watch your plants and adjust accordingly. I like my setup and use it for veg and flower but at 3,000K it produces a shorter plant (which I want). The higher the intensity; the shorter the plant. I ran my veg cycle at 125 watts per panel (375 total) over 18 square feet in a 24 square foot space. I only turn up lights when I get into flower where the intensity is needed most. It saves on electricity.
You can gradually turn the power up over the course of a week if you wanted @Myfriendis410 is giving good advice as well
I’ve got the 35k panels in the 260xl so at 50% they should be around 100/130 w so I will go to 75% for Veg and full on the flip. So once the GIRLS (positive thinking) get transplanted raise the light to 75% then 100% for flower . Sounds like a plan
Height above plants too is another control to use. If you have small plants; low power down close. If you need to widen your canopy get farther away and turn up the power. Plants need way less light in veg.
Yes on the height. Just close now as to stop stretching will be raising it each day and watch um.