If I can afford Alitatup, I noticed your problems, those black disks I used them too. Excellent x clones but with seedlings creates wringing problems. Timing the plant is good for the first week of life, then it should be activated to the maximum. I've seen the very dry pot what it's supposed to be, should it not be full of droplets? If you have the cover that lets in light, use a thermal blanket to cover it, little expense maximum yield. I just said my thought.