Nirvana's white rhino rocks! I grew it out several years ago with some friends. First time using a600w light. Good timesNirvana White Rhino.
To get them started i :
1. I took a 1 gal pot and poured 6 scoops of pro-mix, 2 scoops of perlite inside.
2. I soaked the dirt, mixed it with my hands and left the pot in the sink until there were no run off.
3. I planted the seed 1/2 inch deep and placed the pots under my MH on a 18/6 schedule.
Sounds like a perfectly mixed soil for the seeds and lighting is great. What watt mh do you have, what is the distance to the soil, and how are your temps at soil level?
As CC said, veg starts around 2 weeks after seeds pop their head above ground. Or if you wanted to go by nodes it's approx 3rd set of leaves.
Message me if you need more advise and I'll keep an eye on this thread.
Cheers!
BeL