1 are you using only tiger bloom
2 looks like you pretty much left them alone to do there thing. You should read up on fiming topping and lollipop ink and pretty much use all of them
3 those are seeds...yes.....you flipped them pretty early older genetics are better.....
4 Did you get a clone
5 how May watts is that led? How close to the plants?
6 what soil
7 how biga container
8 being youngish seed plants, container size , and soil you may not need much nutes but you most defiantly need more than tiger bloom but not yet as said previously they are a little nitrogen rich which isn't all that bad for the first 2 weeks of flower but you really need that nitrogen to drop a little more while you slowly crank on the flower nutes the further along you get.