cheap B & Q house plant compost (good) £4 for 12 litres, mixed with john innes no1 young plant compost (crap) £5 for 30 litre, from b and q (uk) and perlite.
(total 100w) 25w x 4 tube) T5s and 600w Hps 20/24 hrs, swapping back and forward between lamps, days at a time, now under 1 x 600w hps, formulex nutrients, and canna rhizotonic for root growth and strength.