Hi Senhor, I looked over your diary and made a couple of observations that I hoped to share, I myself am a new grower too and always learning, when all things are in unison oxygen within the root zone is the limiting factor of growth, not only that if there is no evaporation within soil then the only thing in those clay/plastic pots that are using up the moisture is the roots of the tiny teeny little plant barely past the seedling stage, all the days of your diary are wet wet wet, you should barely need to water for the first week and the consequence of overwatering in a closed plastic/ceramic pot is always worse if stagnation takes hold within the root zone. The little heavy green leaves are heavy with water, they have sucked up as much as they can, but photosynthesis is slow, as the soil becomes gets wetter and wetter, less and less oxygen reaches the roots until the roots start to suffocate and dye, eventually leading to root rot or just severely stunted growth depending on how long it's left with a high RH% within the soil.
Some tips to help get back on track.
Set ambient temp intent to 82, lower your light until the top of the canopy reaches 86, and the leaf surface temperature for optimal photosynthesis occurs at 86 farenheight. We want it warm, you must also keep RH below 50% at soil level, so long as it stays above 50RH% moisture, in general, won't evaporate, we want to try and keep it in a constant state of drying, cycle, absolutely never fear about underwatering, the plants are hardwired to "hibernate" to reserve moisture content, when you see leafs drooping just throw in some water and the plant will spring back to life, a little drought stress is also beneficial to keeping a healthy cycle, once you have a better understanding of bacteria you soon realize that so long as you keep a constant state of change bacteria/stagnation can never take hold.
I highly suggest getting them into airports, this will almost eradicate overwatering as an issue, you will really be able to hone watering skills along with being able to read the plant and let it tell you when it wants water.
PH is also low add some dolomitic lime What the others said about PH is also corrrrrect.
Good luck.
stop fertilizing/feeding seedlings with 6 leafs, Molasses>? no point unless its near flowering, use powdered molasses, anything syrup based will be a breeding ground for bacteria too if soil is not kept aerated.