She keeps growing very fast every day. Today I saw two small spots on the first two leafs but I believe what caused that was the light which was about 25cm close to the plan. Also, I have change the water/solution yet. As the water is evaporates, which creates more room for the roots to breathe naturally like in a Kratky method. =)
your roots and plant look really amazing. i'll give AN series some more tries and then if it doesn't work, I'll consider switching to Flora series. cheers.