I have experimented somewhat with Flower Seed Soak,
so far most seeds treated didn't germinate,
the only seeds that did germinate were only 1 month old and a cross
between Lowryder2 and Durban Poison that I bred myself to be Auto Flowering,
I had only just planted 25 of these seeds and all 25 sprouted and are healthy.
The seeds that still sprouted after using Flower Seed Soak didn't go so well,
half of the 12 seeds I soaked didn't want to grow roots.
Of the 6 seeds that made it 3 were male, and 1 of the females just up and died for no reason a couple of weeks after flowering started.
So my experiments using Flower Seed Soak were a total failure, and I wouldn't recommend using it on expensive bought seeds.