You don't need to spray when you see well formed balls. I think you can spray on the leaves, but I wouldn't spray on the balls.
If the balls look good, I wouldn't spray anymore.
About the 100% germination rate:
So far I have been fortunate. Even the best seeds in the world do not all germinate.
I also only planted, fat, really good looking seeds so far.
I believe all my seeds have germinated so far for a few reasons:
-I hit the girls with pollen while the buds were forming and took out the shemale early enough so that no little "punk" seeds form. (punk=immature)
-I use Florlicious Plus with my fert (in coco).
I am a big fan of this stuff. I use it on my tomatoes and many non-cannabis plants.
-I let the plants go much longer than if I was just going for buds.
The trichomes were nearly 100% amber. This allows the seeds to fully form. Some seeds were falling out of the buds. Make sure to not let those go
to waste.
-I picked the best seeds to plant. I have a theory that fat seeds make better plants. It is a good thing I have about 2,000 fat seeds.
Again, if I can do this you can do this. I'm just a regular grower (my weed is the bomb, yes, but I am just a regular grower
)
If you can grow decent weed, you can produce your own seeds.
You do not have to infest a whole crop, you can spray a few branches and then remove them from the plant and room before the balls open. You put the branches in PHd water under 12/12 and collect the pollen. Then you can paint it on the buds you want seeded. (mark the branch with the variety if you use more than one kind of pollen, I use twist ties)
Remember seeds need around 4 weeks to fully form (It may be slightly less for autos)
edit
Floralicious Plus is about $55 a quart. Don't let that scare you. The directions say 1 ml per gallon. Unless google is full of it, that means you can mix 946 gallons with 1 quart.
I foliar feed some of my outside plants with Floralicious plus, just make sure to not hit any flowers (corn, tomato, flowers on shrubs...)
My Rose of Sharon was starting to yellow, sprayed it down with floralicious plus and it was green the next day.
Floralicious Plus does affect PH, but so do all kick ass supplements.