Growing two Tropicana Cookies Purple Autos hydroponically. My plants have just started week 3 and are looking pretty rough. My specs are:
ViparSpectra P2000 (at 60% intensity, ~22.5 in. from top of canopy)
Reservoir ppm: ~325
Reservoir pH: ~5.8
Humidity: ~65%
Temp: ~75 Degrees F
If the Hydroton is not wicking you may to need to either add a 1/4" squitter line, from the pump into the base of your lid net pot, or for a few days pour solution from the top down to get the roots seeking more.
Good luck!
Can’t recommend much on the hydro side, but that looks like a lot of light for those little plants, definitely too much if they’re already not happy. I looked up the spec sheet for that light & at 22" & 60% I’m guessing you’re probably in the neighborhood of 300-400 umols/m2/s. I don’t hit mine w/ that much light until they get some decent size to 'em.
This is just an estimate assuming linear dimmer function & based on their spec sheet intensities.