60 3"X3"X2.5" cubes under a 600 w HPS thats on 24X7. They are 15 days old right now and not looking too good. I got them on a 3 minute 4 times a day cycle. The PPM is 1180 (.7 scale) and the PH is 5.8-6.0, water temp is 23 c and the avg. room temp/r hum is 75 f/45%. Any advice is good advice. Please help me these are good clones from Humbolt that I want to spread around S.D, gracias.