im growing blue cheese (big budha x Blueberry) clones. they are on day 17 and have been vegging under a 400watt MH + 6 24watt CFLS . this is there first day of vegging under my new T5 8 tube florecent fixture.over the past few days most of the stems have been turning dark purple. and seems to have slightly stunted growth as well as whats shown in the following picture. If anyone can offer any kind of help it would much very much appreciated.