what causes the leaf tips to turn dark purple then to white and stop there? plants are growing rapidly so they are not stunted or have slow growth. fert:bio bizz fish emulsion plagron phyt amin
Pictures usually help. From what I know though a lot of cannabis turns purple from temperature. I've never heard of going from purple to white though.
right now i have only these pics http://forum.grasscity.com/general-outdoor-growing/420228-my-first-grow.html tommorow i'll get some close up of the leafs