Yes! I need help! my leaves turned yellow and brown/ crispy at tips and are curling I first posted on 3/30/11 and received NO response. On 4/1/11 I decided to flush the system ph at 5.9. i hope i listed enough info. please help. 2'x4' flood and drain hydro table/indoors/temp@69 and RH @ 59 20 gal res T5 4 bulb 220watt lighting 4" from plants Technaflora nuits for veg cycle (success starter kit) water cycle= every 2hrs/30 mins 12 1gal pots medium= rockwool cubes in hydroton 18/6 light cycle