Your name reminds me of being a kid in NY. We always had a corncob pipe bought at 7-11 to smoke our absolute shit weed in Brooklyn.
go to 18" & bump up to 50%.
The ts1000 is very bright on 100%, at that power if you go below 30 inches for young plants they might suffer. I use the TSL2000.
You are taking advice from another completely new grower a Mars ts1000 can be used at 100 percent for seedlings hang that sucker 2 foot above the seedling and turn the light up
That 100w light isn’t brighter than a 1000w hps build nor is your tsl2000. This plant is super easy to grow the sun is brighter than all these lights and seeds germinate out of the ground out side no problems just keep airflow high and the light 2 ft from the top of the plants and run them at 100 percent
Just download a lux meter. They are fairly accurate
At lower light levels they work ok, but when the intensity gets up there they can't handle it.
Depends on what phone you have tbh. On my note 10+ vs my buddies actual lux meter it was fairly accurate up to about 60k. But yea over that things got funky.