Thanks for the detailed log.
I'm just starting my first grow. I put 6 seeds (2 different strains) to soak and after 24hr only 1 seed had sunk, now after about 36hr the other 5 are still floating. I did 2 parts water and 1 part hydrogen peroxide. They have just been on the counter covered as I don't have a heat pad yet (arriving tomorrow). The 1 seed that sunk has been moved to a paper towel between the saucers like you did, but still isn't heating. Room temp is around 68 during the day and 65 evening.
At this point, are the other 5 seeds still viable and will sink, or is sinking not totally necessary?