I have 8 Plants (4x KC 36, 4x Super Skunk #1) under a 48" 36W Flouro.
They were started in 2" peat pots then transfered to 5" Plastic Pots in a mixture of specialist potting compost/perlite (60/40).
Have fed with miracle grow every week.
They are aprox 21 Days old and are now over 12" Tall...