Seeds haven't sprouted

A customer has a question and I hope we can get some opinions on it, thanks

I soaked my WW Auto seeds for 24 hours in room temp filtered water. I then planted them in coconut pellets that were hydrated and warmed in my tent. I planted 5 seeds. Only one has sprouted and it looks healthy. I’ll transplant it into regular soil soon.
I have a picture. My 36"x36" tent is running around 75F and humidity is around 50%. I’m using a VIPAR SPECTRA Reflector-Series 450W LED Grow Light Full Spectrum.

How long ago did you put into coco pellets and how deep did you plant them

How wet are they???