No, the "dents" are nothing to be worried about, but the very dark green colour indicates that this plant is very over fed.
Feeding baby plants 8 different fertilizers/supplements is not the way to grow cannabis...........feeding them excessively will not make them grow faster or make them grow "super flowers".
Select 2-3 fertilizers for one feed, then for the next feed, select another 2-3 different fertilizers and alternate them so that the plant is getting a balanced diet, not a little bit of everything/many, many things.
Remember too, in soil, a schedule of plain water/plain water/feed/plain water/plain water/feed........ seems to be ideal.