im doing that and nothings happening.. temps are at 18 C, lights are on 16/8 (42 Watt CF) , stems are just an inch above the water level, lots of air bubbles are coming up. P.H. is at 6. my clones are slowly dying its been like a week.., i got a see through garbage bag over top to keep it humid.... I had the stems under water before, then i realized they should be above water surface.. any help ? I really need these clones to root, i got 8 of them i can take a pic of my setup later on today. thank you