Poor genetics?? Or Me

Its likely you or more spefictly the medium. but can't rule out the seeds fully unless you test its germination in a clean enviroment. Cinnamon is more an old wifes tale. the cinnamon its self will rot and make mold or feed fungas. It might make the grow room smell nice though. Anti fungal properties come from the oils in the plant. best to sprinkles it into the hole around the plant vs just on surface level. but should water in just fine. its not a end all cure for things. its just a small boost.

You must be doing something wrong.. Never really get failed seeds... Didn't you say you dug the seeds up and replanted them.. There's a big problem right there.. Just curious on the gnat problem just a week into a grow.. How is that possible unless it's soil dug up from the garden?, useam to be having a bit of a struggle, keep it simple stupid my dad would say..