Sure looks like LED bleaching to me. What type of lights are you using and how far from the plants is the light? Also, plants of that size generally respond better to more blue than red. I crank up the red only after seeing the first flowers.
thanks for replies, im using a mars 300 at the moment untill my cob driver arrives in the next few days. i hope its bleaching never had this problem before.
I have never diagnosed any plants other than MJ so I cant be sure, I imagine most of the basics are the same.
If you can take a photo under normal lighting it might be a bit easier to say.