ok..now the pictures. (not all 5 are up there FYI)

1) the indica beside the sativa. keep in mind that they are the same age, only the indica is a few days YOUNGER
2) badly-focused pests on bottoms of my flowering plants fan leaves. they fly away when i give it a hard shake.
3)a kinda-freaky clone. its recently begun to grow oddly and get some nutrient-related problems. any tips?
4) a seedling with a dry, brownish stain almost on its lower leaf set (the other seedling is similar, but to much lesser extent
5) the indica is freaking huge!!! its already got mini-branches about 1-2cm long down there!

so my questions: how do i remove the bugs (believe theyre white flies), fix the 2 different plant problems, and why is the one plant so freakishly large?