Rudy, Either method will work. I soak my seeds in hot water ( but not burning hot) overnight. They germinate very quickly. But some just do a short soak. Try it both ways and see what happens. Best And Happy Yardening, Nancy.
Rudi, the kelp is optional. Tests have shown seeds germinate faster using it. Kelp has all kinds of benefits and I do use it. That said you can grow nice plants without it. Some folks don't want to spend extra money. Best And Happy Yardening, Nancy.