This week they started to take off. Even the power plant being too small and presenting deformation in the first pair of leaves, she is keeping up with nodes.
The PPFD was 160 and they seem to love it.
I can see a spot in a few leaves, I will look into it today.
I had a problem with mold growing on the rock wool walls of the Gorilla Glue. I believe it did not affect the rock wool itself or the plant.
Either way, I removed the walls, changed the support completely and sprayed a solution of h2o2 all over the 4 rock wools.
From now the plants will start receiving 350 PPFD and 700 PPM of nutrients.