yeah i think so too, probrably shortly after they flower i suppose, if the newwer leaves are looking dry and lighter coulored, could it have somethign to do with having the lights on too much, im pretty much forcing them under 24/0 but every now and then my girlfriend shuts the light off on me like a dork just to piss me off, its getting worse as time progresses, im now definatly thinking of uploading some pics somewhere on this site **Oh yeah and i made a mistake the light im using is the 42 watt 2800 lumen, these any good for anyone else? its a soft white, ill be picking up either a full spec. or a daylight 6500k today i think though**