Red I think they are coming along fine and I think your smaller ones will be fine as well.

I wouldnt feed them anymore than once a week....anymore often is too much.

Are you adding superthrive?

If not, I would.

Other wise , looking really swell.......

Pics 1, 2 and 5....I can see the floro light....

WHy?

All the light I can see should be on the plant....perhaps you moved for the pic???