Which is better...tap, distilled or purified water to germinate seeds in?
I mix tap and RO water to get 150ppm. I then mix 1 part hydrogen peroxide to 2 parts water to get 1% peroxide. I shake my seeds in a matchbox lined with fine sandpaper (for 30 seconds) and soak in this dilute peroxide.
I'm no longer a fan of soaking until they crack. I intend to soak 4-8 hours and then place in Rapid Rooter plugs (upside down, not the stem hole already present, but poke my own seed-size hole in the other end) and bury this flush in the soil.
I like peroxide because it disinfects, and precipitates oxygen bubbles which adhere to the seed, keep it floating to the surface (less risk of drowning). I like the idea of soaking to get the process going. But, I'm thinking that waiting 24 hours is too long, serves no purpose, etc.
I like to go into RR plugs instead of the soil itself because they have a more uniform texture, drainage.