On some of my young plants, the newly formed leaves comming out from the centre are turning a slightly purple colour, they are all doing it, so maybe it is genetic. COuld somebody tell me what they think this might be please, i dont want them to die! My temperature ranges from 77-90 (day) night it falls down quite far to around 60-67. Humidity is 40 - 55 (day) and night 45-50. (i think) do these sound ok to you, because i have spent all my money on lights and fans, and still it isnt changing that much. will they be ok? I have put some homemade co2 in there, if that helps at all?