UPDATE
I transplanted them into 3GAL pot over the weekend.
Here they are at day 25
I still can't tell which are suppose to be the Green Crack and Purple Kush.
Just started training them to open up the middle.
What's with the three leaves set? Is that from stress?
I'm seriously starting to doubt if the clones I received even are Green Crack. Here is the description of the Green Crack.
Sativa 75%, 25% Indica. Vegetative Growth: very branchy and very fast. Likes to grow and reacts well to fertilizers.
All 4 of the clones I received are slow grower, very short and squat with big broad indica like leaves. They're vegging under 1000W MH. I have M39 vegging beside them, at day 18 the M39 are already the size of the 25 day olds GC+PK.
plants have varying genotypes and thus phenotypes, with a whole range of different genes being expressed differently even in the same strain. recently had a whole heap of white widow and they ranged from dark green bushy fast growers to slower growing thin leaved pale green coloured. i wouldn't stress too much mate