is something wrong with one of my plants, or could it be a different strain?

hey all,
i bought 2 clones i was told they were both "super silver haze". it's been 2weeks, and one is way bigger than the other. could it be that one is a different strain? i just want to make sure nothings wrong with it. this is my firsrt hydro grow.

the pic on the left i took 2 weeks ago, the others are from right now

I have a couple plants that were started same time, same conditions and one is noticeably larger than the other. Its probably a number of things that could cause it. Most likely a genetic thing or the smaller one had a hard time recovering from the shock of moving.

Fade

Id say Fade pretty much said it. Environmental conditions, specific stress during transportation, genetics...they can all cause a plant to grow at different rates. I wouldnt neccessarily think its a different strain unless you are noticing very different stem and leaf composition and color. When buying clones, unfortunetly you never know the history of the mother or whether those clones even came from the same mother.

The good news is, often those slow to start plants can catch up just fine. Ive had plants that lagged for weeks, then whatever problem was fixed or the plants life cycle finally matched the conditions (there you go Zandor), and they took off and nearly caught up.

thanx guys, i appreciate it. that's good to know.