Midnight Indicas

I'm having troubles to get those Slurricanes to grow. They germinate fine, but nothing happens after that. Those seeds I put them last week, one of them turned into white mush. Taproot was fine when I put them to peat, but later on, nothing happens. There isn't any clear signs of why this is happening. One of them showed its tail, but progress stopped there. Just barely, though. This is kinda frustrating, especially when others are growing just fine... Did some research about the situation and now I'm trying to do more shallow burying. There's just a teeny bit of soil on them, I also kept them in germination longer, so the taproot is longer. Time will tell, if they start growing. I plugged both seeds I originally germinated, and fired up two more seeds. If these won't start growing, I'm gonna have to resort to different seeds, again. Zombie Brides started immediately, and they've been growing ever since. They also had a lot bigger seeds in general, than Slurricanes. Bottom right rockwool cube is currently empty. I got Humboldt's Mountaintop Mints and one Fullgas! from Green House Seeds in my reserves. Or at least, what I'm willing to grow in this batch. Also some Zombie Brides, but there isn't enough variation if I'd do just one strain grow.