Auto Blueberry

So I had 4 other blueberry autos going, but they did not sprout after a week. This is my first grow indoors after a 6 year hiatus, so there might be some grower errors on my part. I heard that a seed soak with just water is enough to germinate the seeds. I used Biorhizo 4ml/l, so around 4 cups in one liter, 1ml per cup, if my math is correct. I did not give it 1ml/cup, I diluted it by 75%. But still maybe that was overkill, I do not know. The next possible error I could think of was after the seed soak I put them on a moist paper towel on a plate using the seed soak solution they were in to wet the paper towel. I then put another plate on top to "black out" the seeds inside, I know germinating seeds are to be kept in darkness. I put the plate by the two week old auto blue berry. Maybe the light seeped in? I do not know, couldnt tell. Around the second day all the seeds had cracked open, small tails. I moved the plate on top of my QB because I was getting worried about the possible light leak. I think the heat from my QB might have been to much (around 85f) for the seeds, maybe stunting them I do not know. After that I moved them into a cardboard box, sealed it, and left it for another day under the light. Then I planted the next day. I watered with Advanced nutrients grow a and b, 150ppm (500 ppm scale). I later found out that advanced nutrients uses the 700 ppm scale. So I was feeding at 210ppm. Ive seen many growers feed at 700, 800, 900+ on the ppms! And thats in the seedling stage too, day 1! Maybe this version of auto blueberry from Southern Oregon Seeds couldnt handle 210ppm at this atage, I do not know. Need more seeds to know. Anyway, the one and only surviving blueberry is starting week 4 today.