Very small about of weed for 7 weeks flowering

why are my buds so small for 7 weeks of flowering?

2 week left,a lot can happen in two week in flowering,i flower most strains 9 week hazes longer

It has a really long flowering time?

Pot size determines plant size always go with to much over not enough. It may also be that your light is either not powerful enough or not close enough to the plant

could be a number of things, are all plants the same strain? I had only one plant do this the other day, I put it down to a dodgy seed.
not the case here though, whats the strain?